A solid is formed by mounting a hemisphere of radius 20 cm on top of a right circular…
MATHEMATICS · Subjective · CBSE · Mathematics · Surface Areas and Volumes · Surface Areas and Volumes
Problem
A solid is formed by mounting a hemisphere of radius 20 cm on top of a right circular cylinder of the same radius and height 60 cm. The curved surface of the hemisphere and the curved surface of the cylinder are to be coated with a protective chemical, but the circular base of the cylinder is left uncovered. If the coating costs ₹200 per square metre, calculate the total cost of coating the solid.