Question

A rectangular sheet of size 22 cm × 10 cm is folded along its length to form a cylinder. Find the volume of the cylinder formed in ${cm}^3$.

Answer 1

Since the rectangular sheet is rolled along its length,

We have Cirumference of the cylinder = Length of the rectangular sheet

2$\pi$r = 22

$\Rightarrow$ r = 3.5 cm

Height of cylinder = breadth of the rectangular sheet

$\Rightarrow$ h = 10cm

Volume = $\pi$$r^2$ h = 385 ${cm}^3$​