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sin A = 3/4

cos²A + sin²A = 1

cosA = √ (1 - sin²A)

cos A = √ ( 1 - (3/4)²

cos A = √( 16 - 9)/4²

cos A = √7/4

Area = length*breadthI) Area = 24.5*18= 441m²ii) Area= 12.5m*8dm. = 12.5m*0.8m= 10m²

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dy/dx (8x³-4x+3)

= 24x²-4

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Given,cone radius r = 21 cm,cone slant height l = 35 cm,cone height h = ?

Using pythagoras theoraml^2 = h^2 + r^235*35 = h^2 + 21*21h^2 = 1225 - 441h^2 = 784h = 28

Therefore, height of cone = 28 cm

area of a rectangular door= 2.6*1.12.8m^2cost of painting for 1 m^2= 20rupeeso for 2.8m^22.8*20= 56 rupee

(x+3)(x-1) = 3(x - 1/3)x^2 - x + 3x - 3 = 3x - 1x^2 - x - 2 = 0x^2 - 2x + x - 2 = 0x(x - 2) + 1(x - 2) = 0(x +1)(x - 2) = 0x = - 1, 2

Roots of given quadratic equation are-1, 2

thex

Distance travelled in first 3 hours = 50*3 = 150 km. Distance left to be travelled = 280 - 150 = 130 kmTime left = 5 - 3 = 2 hoursSpeed = DIstance / Time = 130/2 = 65 km/ hr

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Let the number of one rupee coin be xSo, number of 2 rupee coin is 1/3 of xSo, x + 2(1/3x) = 115X + 2/3x = 115(3x + 2x)/3 = 1155x/3 = 115X = 115 x 3/5X = 69So, number of 2 rupee coins are 1/3 of 69=23

Test for divisibility by 7. Double the last digit and subtract it from the remaining leading truncated number. If the result is divisible by 7, then so was the original number. Apply this rule over and over again as necessary.

We get 174 which is not divisible by 7 so 1782 is also not divisible by 71782 on division by 7 leaves remainder 4.And 254 * 7 + 4 = 1782.So 254 plants in each row and 4 plants left.

can I get the pic I am unable to understand it

Market economies promote disparities in income distribution even when resources are optimally used. This is because of the following reasons.

1. Products on which the returns are high get more resources. It means that the more goods are being produced for the rich or elite class of the society. It means poor sections are not being able to get the needed products.2. Market economies belive more on the jobs outsourcing. Outsourcing of jobs is done from those countries where there is cheap labour (labour is available at less cost). Since, jobs are being outsourced, domestic employment get reduced. So, we can say that, even if profits are rising, GDP wage component is continuously falling.

1st

2nd

Given: OA=OB=OC=OD=14CM Angles DOB, AOD, COB and AOC are 90 degrees each ( quadrants)To find the area of the shaded region.The radius =7cmArea of a semi circle = 22/7*7*7*1/2 = 77sq. cm

Area of a quadrant = 90/360*22/7*14*14 = 154 sq. cm

Therefore, area of shaded region==2(ar. semicircle) + 2( ar. quadrant- ar. semicircle)=2 * 77 + 2 * (154 - 77) sq. cm= 154 + 154= 308 sq. cm

Step-by-step explanation: to find mass

we have to find volume of pipe

Volume of pipe = volume of outer cylinder - volume of inner cylinder

Outer cylinder

Radius of outer cylinder, r₁ = D/2

28 / 2

= 14 cm

height = 35 cm

Volume of outer cylinder = πr₁²h

= π (14)² 35

Inner cylinder

Radius of inner cylinder r₂ = D / 2

= 24 /2

= 12 cm

height = 35 cm

Volume of inner cylinder= πr₂²h

=π (12)²35

So, the volume of pipe = volume of outer cylinder - volume inner cylinder

=π (35) (14² - 12²)

=22/7 × 35 ( 196 - 144)

= 5720 cm³

Mass of 1 cm is 0.6 gm

∴ mass of 5720 cm = 5720 × 0.6 gm

= 5720 × 0.6 /1000 kg

= 3.432 kg

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Aright triangleis atrianglein which oneangleis aright angle(that is, a 90-degreeangle). The relation between the sides and angles of aright triangleis the basis for trigonometry

A right triangle or right-angled triangle is a triangle in which one angle is a right angle.

A right triangle or right-angled triangle is a triangle in which one angle is a right angle (that is, a 90-degree angle). The relation between the sides and angles of a right triangle is the basis for trigonometry.

right angled triangle is a triangle with 90 degree angle

Prime factors 36=6*6=2*3*2*3

36= 2*3*3*2thanksPlease Like 👍

1cm=0.01 m90cm=90×0.01=0.9m0.9m/ 1.5m=0.9:1.5=0.3:0.5

3:5

90cm/1.5m60 ratio answer

cube root of 1331/2197 will be 11/13thanks

-13/11 ....................

question you have submitted is incomplete you have not posted the diagram so we can't answer you. please post a proper question with diagrams

volume of cube = cube of its side.So, side = cube root of 2197 = 13.area of each side = 13×13 = 169

Rainwateris usually free from harmful chemicals, which makes it ideal for irrigation purposes. Another importantadvantageis that it reduces demand for potablewater. It is important especially in areas with lowwaterlevels. These are some of the significantadvantagesofharvesting rainwater.