Question

a rectangular paper of width 14 cm is rolled along its widht and a cylinder of radius 20 Cm is formed. Find the volume of cylinder.

Answer 1

hiiii friend
here is your answer
as the paper of width 14 cm is rolled along its width so the height of the formed cylinder be 14cm....
now
volume=pie×r^2×height
$= \pi \times {r}^{2} \times h \\ = \frac{22}{7} \times {20}^{2} \times 14 \\ = 22 \times 400 \times 2 \\ = 17600 {cm}^{3}$
so the final answer =17600cm^3


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hope it helps
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Answer 2

given, the width of the rectangular paper is 14cm, the cylinder is rolled Along the width of the paper. so the height of the cylinder will be 14cm.

given radius of the base of the cylinder formed is 20cm.

volume of the cylinder = πr²h

= 22/7 × 20 × 20 × 14

= 22 × 20 × 20 × 2

= 17600cm³

hope this helps...!!