A solid is composed of a cylinder with hemispherical ends.If the whole length of the
Channel: Doubtnut
Date: 2020-04-19

A solid is composed of a cylinder with hemispherical ends.If the whole length of the solid is 104 cm and the readius of each of its hemispherical ends is 7 cm , find the cost of polishing its surface at the rate of ₹ 10 per `dm^2`