The ratio of radius and height of a cylinder is 2:3 The total surface area of Cylinder is 1570 cm². Find the CSA of Cylindex. ( pie = 3.14)
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Answer:942
Step-by-step explanation:
As given radius and height are in the ratio so let us take them as radius = 2x and height=3x
Then total surface area is given as 1579
As we know the formula for total surface area of cylinder is 2πr(r+h)
Then substitute r and h in the formula
2×π×2x(2x+3x)
2×π×2x(5x)
20×x^2×3.14 ( π value given )
x^2×62.8=1579
x^2=25
Then x=5
Then we got radius = 10
And height =15
Then CSA is 2πrh= 2×π×10×15
CSA= 942
Step-by-step explanation:
As given radius and height are in the ratio so let us take them as radius = 2x and height=3x
Then total surface area is given as 1579
As we know the formula for total surface area of cylinder is 2πr(r+h)
Then substitute r and h in the formula
2×π×2x(2x+3x)
2×π×2x(5x)
20×x^2×3.14 ( π value given )
x^2×62.8=1579
x^2=25
Then x=5
Then we got radius = 10
And height =15
Then CSA is 2πrh= 2×π×10×15
CSA= 942
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