A solid sphere of radius is to be completely covered with a protective film

MATHEMATICS · Subjective · CBSE · Mathematics · Surface Areas and Volumes · Surface Areas and Volumes

Problem

A solid sphere of radius

1.2\,\text{m}

is to be completely covered with a protective film. The first

10\,\text{m}^2

of the film costs ₹150 per square metre, and any additional area costs ₹100 per square metre. Calculate the total cost of the film required.