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Question

# A sheet of paper of length 10 cm and breadth 5 cm is rolled along its length to form a cylinder, Find the volume of the cylinder. Take π = 3.14.

A

39.809

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B

38.908

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C

39.5

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D

Can't be detrmined

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Solution

## The correct option is A 39.809 ​ When a rectangle is rolled along its length then the height of the cylinder formed = the width of the rectangle i.e 5 cm. and the length of the rectangle will be the circumference of the base of the cylinder. 2π r = 10 ⇒ r = 5π Thus, volume of cylinder = π r2h = 3.14 × 253.142 × 5 = 39.809 cm3.

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