Question

A company packages its milk powder in a cylindrical container whose base has a diameter of 14 cm and height 20 cm. The company places a label around the surface of the container. If the label is placed 2 cm from top and bottom, what is the area of the label?

Answer 1

CSA of cylinder $=2\pi rh$

Height of label$=20-2-2=16$

Radius $=7$cm

CSA of label$=2\times \frac{22}{7}\times 7\times 16$$=704c{m}^2$.