Question

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

Answer 1

Height of the label = 20 cm - 2 cm - 2 cm
= 16 cm 
Radius of the label= (\(\frac{14}{2}\)) cm = 7cm
Label is in the form of a cylinder having its radius and height as 7 cm and 16 cm. 
Area of the label = \( 2\pi\) (Radius) (Height)
\(= 2×(\frac{22}{7})×7×16\)
= 704

Hence, the area of the label is 704 cm².