A closed cylindrical drum has radius and height

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

Problem

A closed cylindrical drum has radius

0.5\,\text{m}

and height

1.2\,\text{m}

. It is to be painted on the outside. One tin of paint covers

2\,\text{m}^2

of surface. If

8\%

of the paint is wasted during the work, determine the minimum number of tins required to paint the drum (take

\pi = 3.14