332354 + Interview Questions in Secondary School in Math

1.	)OAB is a sector of the circle havingcentre at O and radius 12 cm. IfmZAOB = 45°, find the differencebetween the area of sector OAB andsector AOB.
Answer» ANSWER: it will be 144π and PLS GIVE BRILLIANT

1.

)OAB is a sector of the circle havingcentre at O and radius 12 cm. IfmZAOB = 45°, find the differencebetween the area of sector OAB andsector AOB.

Answer»

ANSWER:

it will be 144π and PLS GIVE BRILLIANT

Discussion

2.	What is the formula of cubic polynomial when the zeros are given
Answer» ANSWER: USE the FORMULA ${x}^{3} - { {x}^{2} } ( \alpha + \beta + \gamma ) + {x}( \alpha \beta + \beta \gamma + \gamma \alpha ) - ( \alpha \beta \gamma )$ HOPE this HELPS.

2.

What is the formula of cubic polynomial when the zeros are given

Answer»

ANSWER:

USE the FORMULA

${x}^{3} - { {x}^{2} } ( \alpha + \beta + \gamma ) + {x}( \alpha \beta + \beta \gamma + \gamma \alpha ) - ( \alpha \beta \gamma )$

HOPE this HELPS.

Discussion

3.	Subtract 2a -3b+ 4ab -1 from 5a - b+6ab -13.
Answer» Step-by-step explanation: (5a - B + 6AB - 13) - (2A - 3b + 4ab - 1) 3A + 2b + 2ab - 12

3.

Subtract 2a -3b+ 4ab -1 from 5a - b+6ab -13.

Answer»

Step-by-step explanation:

(5a - B + 6AB - 13) - (2A - 3b + 4ab - 1)

3A + 2b + 2ab - 12

Discussion

4.	Quadrant form 6x2 + 10x + 1 = 0
Answer» ANSWER: USE FORMULA method Step-by-step EXPLANATION:

4.

Quadrant form 6x2 + 10x + 1 = 0

Answer»

ANSWER: USE FORMULA method

Step-by-step EXPLANATION:

Discussion

5.	Write the HCF of 2 consecutive nature number
Answer» Step-by-step explanation: hcf of 2 CONSECUTIVE no is ALWAYS 1

5.

Write the HCF of 2 consecutive nature number

Answer»

Step-by-step explanation:

hcf of 2 CONSECUTIVE no is ALWAYS 1

Discussion

6.	The area of a square is (25a+ 70a + 49). Find its side.
Answer» ANSWER: if we add 25+70+49 we get 144 which is a perfect square number hence it will be like $25a + 70 a + 49 \\ \\ a^{2} = 144 \\ a = 12$ hence a is a side of square as area of square is 2 side If you like it MARK this as brainliest Answer

6.

The area of a square is (25a+ 70a + 49). Find its side.

Answer»

ANSWER:

if we add 25+70+49

we get 144 which is a perfect square number

hence it will be like

$25a + 70 a + 49 \\ \\ a^{2} = 144 \\ a = 12$

hence a is a side of square as area of square is

2

side

If you like it MARK this as brainliest Answer

Discussion

7.	19. Fill in the missing number:1654MOTORO
Answer» Step-by-step EXPLANATION: lajdjffhdhfhxhchsshffgidifuv

7.

19. Fill in the missing number:1654MOTORO

Answer»

Step-by-step EXPLANATION:

lajdjffhdhfhxhchsshffgidifuv

Discussion

8.	Simplifylify (2 p5q-2)-2, at least in two different ways.1" (4p²9-43)same answerbtcatblIkolubideaProve thatrove that ()* ()-(6)(*=1ChallengeKis in the shape of a cube whose side is 30 cm. Find10-3 litres)
Answer» ANSWER: what you have WRITTEN i didn't UNDERSTAND

8.

Simplifylify (2 p5q-2)-2, at least in two different ways.1" (4p²9-43)same answerbtcatblIkolubideaProve thatrove that (*)** ()-(6)(*=1ChallengeKis in the shape of a cube whose side is 30 cm. Find10-3 litres)

Answer»

ANSWER:

what you have WRITTEN i didn't UNDERSTAND

Discussion

9.	C) A baby elephant drinks around 12 litre of milk everyday how much milk will it drink in 2 years ?
Answer» ANSWER: HELLO MATE here's your AnsWer for your QUESTION is 8,760L

9.

C) A baby elephant drinks around 12 litre of milk everyday how much milk will it drink in 2 years ?

Answer»

ANSWER:

HELLO MATE here's your AnsWer for your QUESTION is

8,760L

Discussion

10.	Subtract 4979 821 from 9292 921
Answer» ANSWER: YES i KNOW i will REPLY you SOON

10.

Subtract 4979 821 from 9292 921

Answer»

ANSWER:

YES i KNOW i will REPLY you SOON

Discussion

11.	12⁴ x 9³ x 4/6³ x 8² x 27
Answer» Answer: 162 Step-by-step explanation: 60466176/373248 =162

11.

12⁴ x 9³ x 4/6³ x 8² x 27

Answer»

Answer:

162

Step-by-step explanation:

60466176/373248

=162

Discussion

12.	Prove that (sin theta+1+cos theta) (sin theta-1+cos theta) sec theta cosec theta
Answer» Answer: I think your QUESTION is not all RIGHT Step-by-step explanation: hope it will be HELPFUL

12.

Prove that (sin theta+1+cos theta) (sin theta-1+cos theta) sec theta cosec theta

Answer»

Answer:

I think your QUESTION is not all RIGHT

Step-by-step explanation:

hope it will be HELPFUL

Discussion

13.	If every side of triangle is 3 times then percents increases triangle
Answer» Answer: The larger triangle has sides of 9 CM, 12 cm and 15 cm. Its area = 9*12/2 = 54 SQ cm. Hence if the sides of a triangle are INCREASED three times then the area becomes 9 times larger.

13.

If every side of triangle is 3 times then percents increases triangle

Answer»

Answer:

The larger triangle has sides of 9 CM, 12 cm and 15 cm.

Its area = 9*12/2 = 54 SQ cm.

Hence if the sides of a triangle are INCREASED three times then the area becomes 9 times larger.

Discussion

14.	The cost of 5 kg rice is rs 220.What quantity of rice can be purchased in rs 4488?
Answer» Answer: 897.6 KG RICE in RUPEES 4488

14.

The cost of 5 kg rice is rs 220.What quantity of rice can be purchased in rs 4488?

Answer»

Answer:

897.6 KG RICE in RUPEES 4488

Discussion

15.	The area of sector in which 1/4th area of sector of radius
Answer» Step-by-step EXPLANATION: MAYBE QUESTION is WRONG

15.

The area of sector in which 1/4th area of sector of radius

Answer»

Step-by-step EXPLANATION:

MAYBE QUESTION is WRONG

Discussion

16.	An aeroplane leaves mumbai at 7:00 hrs. it arrives delhi to 9:30 hours. how long does it take to reach delhi?
Answer» Answer: 2:30 MINS AGAR BAL vas hua na to TU to gya

16.

An aeroplane leaves mumbai at 7:00 hrs. it arrives delhi to 9:30 hours. how long does it take to reach delhi?

Answer»

Answer:

2:30 MINS AGAR BAL vas hua na to TU to gya

Discussion

17.	If a 2 and b 3 then the value of (1/a+1/b) is a. 25/36 b.9/16 c.35/25. d.16/9
Answer» Step-by-step explanation: Given, a= 2, b= 3 then, 1/a + 1/b = 1/2 + 1/3 = (3+2)/6 = 5/6 CHECK YOUR QUESTION AND RE-POST

17.

If a 2 and b 3 then the value of (1/a+1/b) is a. 25/36 b.9/16 c.35/25. d.16/9

Answer»

Step-by-step explanation:

Given, a= 2, b= 3

then, 1/a + 1/b = 1/2 + 1/3 = (3+2)/6 = 5/6

CHECK YOUR QUESTION AND RE-POST

Discussion

18.	Indrajti bought 10 refriegerator at 12000 each spent 5000 on transport for how much should he sell each refrigerator in order to make a profit of 20000
Answer» ANSWER: she should SELL it for 200000 to EARN a PROFIT of 20000 Step-by-step explanation: first, take the cost price =1200010+500012 =120000+60000 =180000 so to earn 20000 she should sell it for 2000000

18.

Indrajti bought 10 refriegerator at 12000 each spent 5000 on transport for how much should he sell each refrigerator in order to make a profit of 20000

Answer»

ANSWER:

she should SELL it for 200000 to EARN a PROFIT of 20000

Step-by-step explanation:

first, take the cost price

=12000*10+5000*12

=120000+60000

=180000

so to earn 20000 she should sell it for 2000000

Discussion

19.	୭.୩ ଲେଖାଁ ଅନ୍ତରରେ ଥିବା ୬ଟି ସଂଖ୍ୟା ଲେଖା ହୋଇଛି । ପ୍ରଥମ ସଂଖ୍ୟା ଠାରୁ ଶେଷସଂଖ୍ୟା କେତେ ଅଧୁକ ?
Answer» Answer: 6 number MEAN 5 GAP among them 3 difference 5*3 =15 all the BEST

19.

୭.୩ ଲେଖାଁ ଅନ୍ତରରେ ଥିବା ୬ଟି ସଂଖ୍ୟା ଲେଖା ହୋଇଛି । ପ୍ରଥମ ସଂଖ୍ୟା ଠାରୁ ଶେଷସଂଖ୍ୟା କେତେ ଅଧୁକ ?

Answer»

Answer:

6 number MEAN 5 GAP among them

3 difference

5*3 =15

all the BEST

Discussion

20.	Solve thisquestions
Answer» ANSWER: SORRY I don't know please

20.

Solve thisquestions

Answer»

ANSWER:

SORRY I don't know

please

Discussion

21.	A number when added to a 2/3 is equal to 55 find the number
Answer» Answer: The number to be added is $\frac{163}{3}$ . Step-by-step EXPLANATION: LET the number added to $\frac{2}{3}$ for the result to be 55 be x. The equation is: $\frac{2}{3}+x=55$ Solve for x as follows: $\frac{2}{3}+x=55\\x=55-\frac{2}{3}\\=\frac{165-2}{3}\\ =\frac{163}{3}$ Thus, the number to be added is $\frac{163}{3}$ .

21.

A number when added to a 2/3 is equal to 55 find the number

Answer»

Answer:

The number to be added is $\frac{163}{3}$ .

Step-by-step EXPLANATION:

LET the number added to $\frac{2}{3}$ for the result to be 55 be x.

The equation is:

$\frac{2}{3}+x=55$

Solve for x as follows:

$\frac{2}{3}+x=55\\x=55-\frac{2}{3}\\=\frac{165-2}{3}\\ =\frac{163}{3}$

Thus, the number to be added is $\frac{163}{3}$ .

Discussion

22.	It's a tough reasoning
Answer» ANSWER: The answer will be 20 Mark it BRAINLIEST and FOLLOW me

22.

It's a tough reasoning

Answer»

ANSWER:

The answer will be 20

Mark it BRAINLIEST and FOLLOW me

Discussion

23.	I got 83%in first term,83% in second term and 85%in third term how much is my total percentage
Answer» ANSWER: HELLO MATE here's your AnsWer for your QUESTION is You GOT 251%

23.

I got 83%in first term,83% in second term and 85%in third term how much is my total percentage

Answer»

ANSWER:

HELLO MATE here's your AnsWer for your QUESTION is

You GOT 251%

Discussion

24.	A²-b²-a²+b² solve plzzzz
Answer» ANSWER: The answer is 0 Step-by-step EXPLANATION: a²-b²-a²+b² =0

24.

A²-b²-a²+b² solve plzzzz

Answer»

ANSWER:

The answer is 0

Step-by-step EXPLANATION:

a²-b²-a²+b²

=0

Discussion

25.	X-3/5-2=2x/5 what wiil the answer
Answer» ANSWER: x-3/5-2=2x+5 =x+2/5x=3/5+2 5x+2x/5=3+10/5 =7x/5=13/5 so,xvalueis7/13

25.

X-3/5-2=2x/5 what wiil the answer

Answer»

ANSWER:

x-3/5-2=2x+5

=x+2/5x=3/5+2

5x+2x/5=3+10/5

=7x/5=13/5

so,xvalueis7/13

Discussion

26.	The length of a rectangle is 6 cm more than it's breadth. When the the breadth is reduced by 2 cm and the length is reduced by 8cm, the area of the new rectangle formed is 144 square CM. What are the dimensions of the original rectangle ?Please answer quickly.
Answer» ANSWER: Dimension Length=20 Breath=14 Step-by-step explanation: LET breadth be x Length be x+6 Area =x^2+6x Now CASE 2 Breadth =x-2 Length=x+6-8 =x-2 Area = (x-2)^2=144 Square ROOT both sides x-2=12 x=14 Breadth=14 Length=20

26.

The length of a rectangle is 6 cm more than it's breadth. When the the breadth is reduced by 2 cm and the length is reduced by 8cm, the area of the new rectangle formed is 144 square CM. What are the dimensions of the original rectangle ?Please answer quickly.

Answer»

ANSWER:

Dimension

Length=20

Breath=14

Step-by-step explanation:

LET breadth be x

Length be x+6

Area =x^2+6x

Now CASE 2

Breadth =x-2

Length=x+6-8

=x-2

Area = (x-2)^2=144

Square ROOT both sides

x-2=12

x=14

Breadth=14

Length=20

Discussion

27.	Write the length of largest chord of a circle with radius 3.2
Answer» Step-by-step explanation: LARGEST chord MEANS DIAMETER So diameter = 2r = 2×3.2 = 6.4

27.

Write the length of largest chord of a circle with radius 3.2

Answer»

Step-by-step explanation:

LARGEST chord MEANS DIAMETER

So diameter = 2r

= 2×3.2

= 6.4

Discussion

28.	How to solve 3²×3⁴×3⁸by using laws of exponents
Answer» Answer: 3×3×3×3×3×3×3×3×3×3×3×3×3×3= 3 ki POWER 14 you can also SOLVE it by this method law of exponents ${a}^{m } \times {a}^{n } = {a}^{m + n}$ So, ${3}^{2 + 4 + 8} = {3}^{14}$

28.

How to solve 3²×3⁴×3⁸by using laws of exponents

Answer»

Answer:

3×3×3×3×3×3×3×3×3×3×3×3×3×3= 3 ki POWER 14

you can also SOLVE it by this method

law of exponents

${a}^{m } \times {a}^{n } = {a}^{m + n}$

So,

${3}^{2 + 4 + 8} = {3}^{14}$

Discussion

29.	Tell me guess questions for ssc maharashtra board exam of all subjects please
Answer» Answer: 1st MENTION for which CLASS U WANT PLEASE.

29.

Tell me guess questions for ssc maharashtra board exam of all subjects please

Answer»

Answer:

1st MENTION for which CLASS U WANT PLEASE.

Discussion

30.	The age of Anil and Suresh are in the ratio of 3:4 and the ages of Suresh and Amit are inratio of 5:2. If the sum of the ages is 86 years, then the age of Amit will be.
Answer» ANSWER: BIT HARDER but can be solved Please MARK as BRAINLIEST ☺️☺️☺️☺️

30.

The age of Anil and Suresh are in the ratio of 3:4 and the ages of Suresh and Amit are inratio of 5:2. If the sum of the ages is 86 years, then the age of Amit will be.

Answer»

ANSWER:

BIT HARDER but can be solved

Please MARK as BRAINLIEST ☺️☺️☺️☺️

Discussion

31.	Compare the following (-136) -(48) _____(-148) -(-36)
Answer» HOPE it HELPS.... MARK as BRAINLIEST

31.

Compare the following (-136) -(48) _____(-148) -(-36)

Answer»

HOPE it HELPS....

MARK as BRAINLIEST

Discussion

32.	Solve it by BORDMAS ruleno. (ii)
Answer» first of all your SECOND question is incomplete please chack the image SWEET HEART

32.

Solve it by BORDMAS ruleno. (ii)

Answer»

first of all your SECOND question is incomplete please chack the image SWEET HEART

Discussion

33.	How much is a- b2 less than a2 + b2 ?
Answer» ANSWER: a+4b Step-by-step explanation: 2a+2b-a+2b =a+4b

33.

How much is a- b2 less than a2 + b2 ?

Answer»

ANSWER:

a+4b

Step-by-step explanation:

2a+2b-a+2b

=a+4b

Discussion

34.	94)એક રેલગાડી 125 મીટર લાંબી છે. જો રેલવે લાઈનના કિનારે લાગેલા એકઝાડને તે રેલગાડી 30 સેકન્ડમાં પસાર કરે તો તે રેલગાડીની ઝડપ કેટલી ?
Answer» gujratii ha Step-by-step explanation: 15 KM/ HOUR

34.

94)એક રેલગાડી 125 મીટર લાંબી છે. જો રેલવે લાઈનના કિનારે લાગેલા એકઝાડને તે રેલગાડી 30 સેકન્ડમાં પસાર કરે તો તે રેલગાડીની ઝડપ કેટલી ?

Answer»

gujratii ha

Step-by-step explanation:

15 KM/ HOUR

Discussion

35.	4 digt number when divied by 7 ,9,11 leaves a remainder of 3,5 7 each case
Answer» ANSWER: 1999is answer dtjoooiwjhshxjdhxhxjhxbdveheueuieieieieuyeydhcbbxnxnenwowooskxn

35.

4 digt number when divied by 7 ,9,11 leaves a remainder of 3,5 7 each case

Answer»

ANSWER:

1999is answer dtjoooiwjhshxjdhxhxjhxbdveheueuieieieieuyeydhcbbxnxnenwowooskxn

Discussion

36.	Tea merchant blends two varieties of tea in the ratio of 5: 4. The cost of first variety is ₹ 200 per kg and that of second variety is ₹ 300 per kg. If he sells the blended tea at the rate of ₹ 275 per kg, find out the percentage of her profit or loss.
Answer» Answer: The value of profit percentage = 12.5 % Step-by-step EXPLANATION: Tea merchant blends TWO varieties of tea in the ratio = 5 : 4. The cost of first variety is = ₹ 200 per kg Total cost of first variety is = 200 × 5 = ₹ 1000 The cost of second variety is = ₹ 300 per kg Total cost of second variety is = 300 × 4 = ₹ 1200 Total cost of two varieties together = 1000 + 1200 = ₹ 2200 Total selling cost two varieties together = 9 × 275 = ₹ 2475 % Profit = $\frac{2475 - 2200}{2200}$ × 100 % Profit = 12.5 % This is the value of profit percentage.

36.

Tea merchant blends two varieties of tea in the ratio of 5: 4. The cost of first variety is ₹ 200 per kg and that of second variety is ₹ 300 per kg. If he sells the blended tea at the rate of ₹ 275 per kg, find out the percentage of her profit or loss.

Answer»

Answer:

The value of profit percentage = 12.5 %

Step-by-step EXPLANATION:

Tea merchant blends TWO varieties of tea in the ratio = 5 : 4.

The cost of first variety is = ₹ 200 per kg

Total cost of first variety is = 200 × 5 = ₹ 1000

The cost of second variety is = ₹ 300 per kg

Total cost of second variety is = 300 × 4 = ₹ 1200

Total cost of two varieties together = 1000 + 1200 = ₹ 2200

Total selling cost two varieties together = 9 × 275 = ₹ 2475

% Profit = $\frac{2475 - 2200}{2200}$ × 100

% Profit = 12.5 %

This is the value of profit percentage.

Discussion

37.	The area of a rectangle is 154cm,its width is 11.Find its;1) length 2)Perimeter
Answer» Answer: 1)14 2)50 Step-by-step explanation: 1) AREA of rectangle = WIDTH X LENGTH 154 cm ^2 = 11 x length length = 154/11 = 14cm 2) PERIMETER= 2 ( length + width ) = 2( 14 + 11 ) = 50

37.

The area of a rectangle is 154cm,its width is 11.Find its;1) length 2)Perimeter

Answer»

Answer:

1)14 2)50

Step-by-step explanation:

1) AREA of rectangle = WIDTH X LENGTH

154 cm ^2 = 11 x length

length = 154/11 = 14cm

2) PERIMETER= 2 ( length + width )

= 2( 14 + 11 )

= 50

Discussion

38.	If p(x)=3xsquare+xsquare+2x+5 and q(x)=(3x-5) and r(x) = (9x+10). Then find out g(x).
Answer» Answer: p(X)=g(x)*Q(x)+R(x) $3 {x }^{2} + {x}^{2} + 2x + 5 = g(x)(3x - 5) + 9x + 10$ $3 {x}^{2} + {x}^{2} + 2x + 5 - 9x - 10 = g(x)(3x - 5) =$ $4 {x}^{2} - 7x - 5 = g(x)(3x - 5)$ $(4 {x}^{2} - 7x - 5) \div 3x - 5 = g(x)$

38.

If p(x)=3xsquare+xsquare+2x+5 and q(x)=(3x-5) and r(x) = (9x+10). Then find out g(x).

Answer»

Answer:

p(X)=g(x)*Q(x)+R(x)

$3 {x }^{2} + {x}^{2} + 2x + 5 = g(x)(3x - 5) + 9x + 10$

$3 {x}^{2} + {x}^{2} + 2x + 5 - 9x - 10 = g(x)(3x - 5) =$

$4 {x}^{2} - 7x - 5 = g(x)(3x - 5)$

$(4 {x}^{2} - 7x - 5) \div 3x - 5 = g(x)$

Discussion

39.	If kavita had rs 1000 left after spending 80% of her money, the how much did she have in begening ?
Answer» Answer: 1000-80/100=800 Step-by-step EXPLANATION: HOPE it HELPFUL

39.

If kavita had rs 1000 left after spending 80% of her money, the how much did she have in begening ?

Answer»

Answer:

1000-80/100=800

Step-by-step EXPLANATION:

HOPE it HELPFUL

Discussion

40.	Distance between the points (2,3)and(-2,3) is
Answer» HOPE it HELPS you........

Discussion

41.	If the height of a Tower made by the tower with the sun by then what is the angle
Answer» 32sjsdtushnsyidjgsmudjmj g ath shut DR hfgndu

41.

If the height of a Tower made by the tower with the sun by then what is the angle

Answer»

32sjsdtushnsyidjgsmudjmj

g

ath

shut DR hfgndu

Discussion

42.	In figure, DE \|\| BC AE=3cm, CE=6cm AD =4cm ,then find the length of AB.
Answer» HOPE it HELPS you.......

Discussion

43.	.22. If a + b + c = 9 and a+ b + c = 25. Find ab + bc + ca.
Answer» Answer: 34 Step-by-step EXPLANATION: a + B + c = 9 a + b + c = 25 By adding above two EQUATIONS 2a + 2b + 2c = 34 So, ab + bc + ca = 34 (as in both equations a variable is two time) please MARK as brainliesr

43.

.22. If a + b + c = 9 and a+ b + c = 25. Find ab + bc + ca.

Answer»

Answer:

34

Step-by-step EXPLANATION:

a + B + c = 9

a + b + c = 25

By adding above two EQUATIONS

2a + 2b + 2c = 34

So, ab + bc + ca = 34

(as in both equations a variable is two time)

please MARK as brainliesr

Discussion

44.	What is the sum of two numbers
Answer» Their addition. Please MARK as BRAINLIEST

44.

What is the sum of two numbers

Answer»

Their addition.

Please MARK as BRAINLIEST

Discussion

45.	In figure if angle adc =angle cbp then prove that abcd is cyclic
Answer» ANSWER: DIAGRAM of the GIVEN QUESTION PLS

45.

In figure if angle adc =angle cbp then prove that abcd is cyclic

Answer»

ANSWER:

DIAGRAM of the GIVEN QUESTION PLS

Discussion

46.	guys i have a seious problem. i have written my roll no. correctly in numbers and circled the right numbers in my board answer sheet but my problem is that i in alphabetical order i have written six at place of sixty mean that i have to write six hundred sixty but have written sixhundred six will cbse reject my answer sheet?
Answer» ANSWER: no if DIGIT ROLL no. is right than u DONOT take tension......

46.

guys i have a seious problem. i have written my roll no. correctly in numbers and circled the right numbers in my board answer sheet but my problem is that i in alphabetical order i have written six at place of sixty mean that i have to write six hundred sixty but have written sixhundred six will cbse reject my answer sheet?

Answer»

ANSWER:

no if DIGIT ROLL no. is right than u DONOT take tension......

Discussion

47.	1) A rectangle has the same area as another, whose length is 6 m more and breadthis 4 m less. It has also the same area as the third, whose length is 8 m more andbreadth 5 m less. Find the length and breadth of the original rectangle.
Answer» Answer: l=210 m b=144 m Step-by-step explanation: let length = l m and breadth is bm *area = lb sqm (i) now length is 6 m more and breadth is 4 m less. so length = l+6 and breadth is b -4 area =( l +6) (b-4)* =lb +6b-4l -24 (II) WHOSE length is 8 m more and breadth 5 m less. so length = l+6 +8 and breadth is b -4 -5 *area =( l +14) (b-9) = lb +14 b-9 l -126 (iii) area of eq 1, 2 and 3 are equal by solving these eq we get l=210 m b=144 m**

47.

1) A rectangle has the same area as another, whose length is 6 m more and breadthis 4 m less. It has also the same area as the third, whose length is 8 m more andbreadth 5 m less. Find the length and breadth of the original rectangle.

Answer»

Answer:

l=210 m b=144 m

Step-by-step explanation:

let length = l m and breadth is bm

area = l*b sqm (i)

now length is 6 m more and breadth is 4 m less.

so length = l+6 and breadth is b -4

area =( l +6) *(b-4)

=lb +6b-4l -24 (II)

WHOSE length is 8 m more and breadth 5 m less.

so length = l+6 +8 and breadth is b -4 -5

area =( l +14) *(b-9)

= lb +14 b-9 l -126 (iii)

area of eq 1, 2 and 3 are equal by solving these eq we get

l=210 m b=144 m

Discussion

48.	Please solve it l give him brain list
Answer» ANSWER: I LAND m there are 3 DISTANCE

48.

Please solve it l give him brain list

Answer»

ANSWER:

I LAND m

there are 3 DISTANCE

Discussion

49.	1) For an arc ABC, 0 = 90° radius = 7 cm. Find its length.
Answer» Step-by-step EXPLANATION: LENGTH of arc=Φ/3602πr =90/360222/77 =1/4222 =11cm

49.

1) For an arc ABC, 0 = 90° radius = 7 cm. Find its length.

Answer»

Step-by-step EXPLANATION:

LENGTH of arc=Φ/360*2πr

=90/360*2*22/7*7

=1/4*2*22

=11cm

Discussion

50.	39. Below are the drawings of cross sections of two different pipes used to fill swimming pools.Figure A is a combination of 2 pipes each having a radius of 8 cm. Figure B is a pipe having aradius of 15 cm. If the force of the flow of water coming out of the pipes is the same in both thecases, which will fill the swimming pool faster?Figure A8cm-8cmFigure B--15cm)
Answer» Pipe B will fills the swimming pool faster. To find : Which pipe will fill the swimming pool faster. Given : There are two pipes named as A and B. From the figure, A is a combination of 2 pipes. Radius of A = 8 cm. B is a pipe. Radius of B = 15 cm. Formula : Area of circle = πr² Finding area of the two pipe ( A ) : Area of one pipe = π × 8 × 8 = $\frac{22}{7}$ × 8 × 8 = 201.14 cm² Area of two pipes = 2 × 201.14 = 402.28 cm² Hence, area of the two pipe A is 402.28 cm². Finding area of the pipe ( B ) : Area of the pipe = π × 15 × 15 = $\frac{22}{7}$ × 15 × 15 = 707.14 cm². Hence, area of the pipe B is 707.14 cm². Area of the two pipe A < Area of the pipe B 402.28 cm² < 707.14 cm². Therefore, pipe B = 707.14 cm² fills the swimming pool faster. To learn more... 1. Below are the drawings of cross sections of two different pipes used to fill swimming POOLS. Figure A is a combination of 2 pipes each having a radius of 8 cm. Figure B is a pipe having a radius of 15 cm. If the force of the flow of water COMING out of the pipes is the same in both the cases, which will fill the swimming pool faster? brainly.in/question/15401048 2. To fill a swimming pool two pipes are used. If pipe of larger diameter is used for 4 hrs and pipe of SMALLER diameter is used for 9 hrs then only half of the pool can be filled . Find how long it would take for each pipe to fill the pool separately if the pipe with smaller diameter takes 10 hrs more than the pipe of larger diameter to fill the pool? brainly.in/question/1113035

50.

39. Below are the drawings of cross sections of two different pipes used to fill swimming pools.Figure A is a combination of 2 pipes each having a radius of 8 cm. Figure B is a pipe having aradius of 15 cm. If the force of the flow of water coming out of the pipes is the same in both thecases, which will fill the swimming pool faster?Figure A8cm-8cmFigure B--15cm)

Answer»

Pipe B will fills the swimming pool faster.

To find : Which pipe will fill the swimming pool faster.

Given :

There are two pipes named as A and B.

From the figure,

A is a combination of 2 pipes.

Radius of A = 8 cm.

B is a pipe.

Radius of B = 15 cm.

Formula :

Area of circle = πr²

Finding area of the two pipe ( A ) :

Area of one pipe = π × 8 × 8

= $\frac{22}{7}$ × 8 × 8

= 201.14 cm²

Area of two pipes = 2 × 201.14

= 402.28 cm²

Hence, area of the two pipe A is 402.28 cm².

Finding area of the pipe ( B ) :

Area of the pipe = π × 15 × 15

= $\frac{22}{7}$ × 15 × 15

= 707.14 cm².

Hence, area of the pipe B is 707.14 cm².

Area of the two pipe A < Area of the pipe B

402.28 cm² < 707.14 cm².

Therefore, pipe B = 707.14 cm² fills the swimming pool faster.

To learn more...

1. Below are the drawings of cross sections of two different pipes used to fill swimming POOLS. Figure A is a combination of 2 pipes each having a radius of 8 cm. Figure B is a pipe having a radius of 15 cm. If the force of the flow of water COMING out of the pipes is the same in both the cases, which will fill the swimming pool faster?

brainly.in/question/15401048

2. To fill a swimming pool two pipes are used. If pipe of larger diameter is used for 4 hrs and pipe of SMALLER diameter is used for 9 hrs then only half of the pool can be filled . Find how long it would take for each pipe to fill the pool separately if the pipe with smaller diameter takes 10 hrs more than the pipe of larger diameter to fill the pool?

brainly.in/question/1113035

Discussion

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