Question

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

Answer 1

∵ Volume of a cylinder = πr²h

Where, h is height and r is radius of base of the cylinder.

If height is double i.e. h = 2 × h = 2h

Then, its volume = πr² × 2h

= 2πr²h

Hence, volume became double of original volume.