What is the volume of material required to make a hollow cylinder having inner and outer radius as 2 cm and 3 cm respectively and height as 14 cm?
Given: Inner radius (r1) = 2 cm
Outer radius (r2) = 3 cm
Height (h) = 14 cm
Volume of material required = Volume of hollow cylinder
= outer volume - inner volume
=πr22h−πr21h [where r1 and r2 represents inner and outer radius respectively]