Question

The rectangular sheet of paper 4 cm multiply by 20 centimetres is rolled along its length to form a cylinder . Find the volume of the cylinder so formed

Answer 1

Answer:

Since rectangular sheet is rolled along its length so it becomes circumstance of the circle. Let r be the radius then 2πr=66.. r=21/2cm and height of the cylinder is 20cm. Volume of a cylinder=πr^2h=22/7×21/2×21/2×20=22×3×21×5=6930 cm cube

Step-by-step explanation:

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Answer 2

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Your Answer:

Length of the rectangular sheet l=44cm

breadth of the rectangular sheet b =20cm

then, the radius r of the cylinder=circumference of the base of cylinder =2pir

44=2x22/7r

44x7/44

r=7

height h of the cylinder =20cm

volume of cylinder =pi^2h

V=22/7x7x7x20

V=22x7x20

V=3080cm^3

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