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Let R = radius of solid hemisphere
Total SURFACE AREA of hemisphere = 462 cm2
⇒ 3π r^2 = 462
⇒ 3 × 22/7 × r^2 = 462
⇒ r^2 = 462 × 7 / 3 × 22
 r^2 = 49⇒ r = 7 cm
Now, Volume of hemisphere= 2/3π r^3
= 2/3 × 22/7 × (7)^3 
= 2/3 × 22/7 × 7 ×7 ×7
= 44 × 49/3 
= 718.67 cm3

Trader mark his GOOD above COST price = 50%
Allow a discount = 25%
His GAIN % = 50%-25%=25%(Ans)

ANSWER:

Step-by-step explanation:

total population in 2004 =50000

20% of population in 2004 = 20 ÷100×50000

                                             = 10000

population of COUNTRY in 2006 =population in 2004 + 20% of population in 2004

                                                = 50000 + 10000

                                                = 60000                                                

                                             =

230.3=690
690/100=6.9

-------------------------HEY DEAR-------------------------

HERE IS YOUR ANSWER.......................

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AREA = (SIDE)^2

  1/2  = (SIDE)^2

 SIDE = 1/ ( ROOT 2)

WE KNOW DIAGONAL = (ROOT 2 )(SIDE)

                                       = ROOT 2 / ROOT 2

                                       => 1

SO DIAGONAL IS 1

HOPE IT HELPS YOU.........

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THANKS...

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Cost of 4 MANGOES = 36

Cost of 1 MANGO = 36/4 = 9

Therefore, one mango costs 9 rupees

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Magnetite is a rock mineral and ONE of the main iron ores, with the CHEMICAL formula Fe₃O₄. It is one of the oxides of iron, and is ferrimagnetic; it is attracted to a MAGNET and can be magnetized to become a PERMANENT magnet itself. It is the most magnetic of all the naturally-occurring minerals on Earth.

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Here, FORMULA., PTR/
principal=3500
time taken=8 months
Rate=8%

3500*8*8%/100=2140

• [(1/3)⁻² - (1/2)⁻³  ÷ (1/4)⁻²]

  = [ 3² - 2³ ÷ 4²]

   = 9 - 8 /16

    = 9 - 1/2 = 17/2.

Thank U.

No 1 ANSWER is 70 % and 30 %

X = 24/7

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Arun bought 10 packets of sugar. He paid 100 rupees ALTOGETHER. FIND the cost of ONE packet of sugar?

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Here,base=40dam
HEIGHT=35m
convert 40dam into m
1dam=10,
since,40dam=400m
Area of parallelogram=base× height
=400m×35m
=14000m²
50paise=₹1/2
cost of WATERING the 1m² field=₹1/2
then,cost of watering the 14,000m² field=₹1/2×14,000
=₹7,000
Hope it's HELPFUL for you,so
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dear this is similar answer

Let the ages of TWO boys be x and y RESPECTIVELY.

x/y= 5/7

x= 5*y/7

Now 8 YEARS ago ratio was 7:13.

(x-8)/(y-8)=7/13

13(x-8)=7(y-8)

13x-104=7y-56

13{5*y/7}=7y+48

65y= 49y+336

16y=336

   y=336/16

   y=21

Therefore,  x=5*21/7

                   x= 15

Current Ages of two boys are 15 and 21 respectively.

Answer:

Step-by-step explanation:

Solution,

LENGTH of rectangle=25cm

Given in the question,

BREADTH is 1cm less than one/FIFTH of length

Length=25÷5

=5

=25-5( 1cm less than one fifth)-1

=19 cm

Area of the rectangle,

=Length×Breadth

=25×19

=475cm2

Area of square 4 times the area of the rectangle,

=475×4

=1900cm2

So, area of square

=1900cm2

92 : 150

HCF of 92 and 150 = 2

92 /2 = 46

150/2 = 75

The simplest FORM is 46 : 75

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ANSWER:

Step-by-step EXPLANATION:

1÷2 +12=6
6+6=12
1÷2+13=6.5
6.5+6.5=13
1÷2+15=7.5
7.5+7.5=15

Answer:

4:5

Step-by-step explanation:

92 :115

H.C.F. of 92 and 115 is 23.

So, 92/23 = 4

and 115/23 = 5

Simplest form of 92 : 115 = 4 : 5

• Here

a = 9               b = 16

• Third proportion = b²/a = 16 X 16/9 = 256/9.

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Here, f(X)= x^3 + ax^2- 2X + a + 4
And, g(x)= x + a

We have, x + a = 0
=> x = -a

Now, PUT the value thus found into f(x) function
f(-a) = (-a)^3 + a(-a)^2 - 2(-a) + a + 4 =0

=> -a^3 + a^3 + 2A + a = -4

=> 3a = -4

=> a = -4/3

Here is your ANSWER it MAY HELPS U

ANGLE A+ an.B+an.C+an.D=360

80+135+an.C+ an.C=360

215+2an.C=360

2 an.C= 360-215

an.C=145/2

So,

an.C&an.D are 145/2

• SPEED = 72 km/hr = 72 x 5/18 m / SEC = 20 m / sec .
• TIME = 5 sec .

Distance = Speed x time

               = 20 x 5 = 100 m.

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30+(-23)+(-63)+55

=(30+55)+(-23-63)

=85+(-(23+63))

=85-86

=-1

GIVEN:

The diameter of the hemisphere is l .

The radius is Diameter / 2

Let r be the radius ......

==> r = l / 2

The edge of the cube is l .

We NEED to find the surface area after the hemisphere is CUT.

Look at the figure I attached ......

We know that the surface area of a cube is where l is the edge of the cube ........

Also the surface area of the hemisphere will be counted.

Then we need to subtract the base area of the hemisphere because it has been cut out .

Surface area of the cube is :

.....................................(1)

Curved surface area of the hemisphere is :

But

..........................(2)

Area of the base of the hemisphere is:

..............................(3)

ADDING (1) and (2) and then subtracting (3) will GIVE us the answer;

Surface area of the remaining solid :-

The surface area of the remaining solid is:

Hope it helps you

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Where is the GIVEN NUMBER?

Solution :

EDGE of the copper cube ( X ) = 27cm

edge of smaller cube ( y ) = 9 cm

If copper cube is MELTED and made

smaller cubes .

Let the NUMBER of smaller cubes = n

n = ( volume of big cube )/( volume of smaller

cube )

=> n = x³/y³

=> n = ( x /y )³

=> n = ( 27/9 )³

=> n = 3³

Therefore ,

n = 27

••••

SI=(2000×12×2)/100

Si=Rs 480

Si=(3000×15×2)/woo

Si=900

TOTAL Si=900+480

Total Si=Rs 1380

Solution

Let the three part be a, b and c.

First part = 'x'

SECOND part = of 'x' is .

Third part = of second part

                ⇒   ×   =

Sum of the three PARTS is 150

According to the question

Let us verify our answer

For verification we have to PUT 60 at the place of 'x'

When we put value of 'x' then we obtain,

Here, LHS=RHS

Hence, it is VERIFIED

First number is 60

Second number is 5/6 of 'x'

                           = 5/6 × 60

                           = 50

Third number is 2/3 × 'x'

                        = 2/3 × 60

                        = 40

HEY MATE HERE IS YOUR ANSWER:


The time = 11h 45 MIN + 3H 20MIN
= 15h 05min
CONVERT 15h 05min in clock time
The time= 3:05


HOPE IT WILL WORK