Question

find the volume of a cylinder which is formed by revolving plastic sheet of dimensions 14cm ×7cm along its length

Answer 1

volume of cylinder is πr^h

then the answer is

22/7×7×7×14cm^. === 2156cm^

Answer 2

In this case, the length of circumference of the cylinder= 14 cm and height= 7cm

Hence,

radius= 14*7/22*1/2

= 49/22

hence,

Volume= 22/7*49/22*49/22*7

= 2401/22

= 109.136 (approx.)