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a rectangular paper of width 7cm is rolled along its width and a cylinder of radius 10cm is formed. find the volume of the cylinder

Answer 1

length becomes the height of the cylinder when folded so h=10cm

and width becomes the circumference C=7cm

circumference=7=2πr
r=49/4cm

volume of cylinder, V=πr²h=22/7*49/4*49/4*10=4716.249cm³





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Answer 2

Given, height of the cylinder h = 7 cm.

Given, radius of the cylinder r = 10 cm.

We know that volume of cylinder V = πr^2h

⇒ (22/7) * (10)^2 * 7

⇒ 22 * 10^2

⇒ 2200 cm^3.

Therefore, Volume of the cylinder = 2200 cm^3.

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