Question

Question 92 (i)

Radius of a cylinder is r and the height is h. Find the change in the volume if the height is doubled.

Answer 1

$\because$ Volume of a cylinder $=\pi r^{2}h$
where, h is height and r is radius of base of the cylinder.
i) If height is double i.e. $h=2\times h=2h$
Then, its volume $=\pi r^2\times 2h$
$=2\pi r^{2}h$

Therefore, Volume became twice the original volume of the cylinder.