Question

some fruits are sliced and packed into cylindrical cans of height 32 cm and daimeter of base 20 cm. A label is placed around the curved surface of the can by leaving a margin of 2 cm from the top and bottom of the can. Find the surface area of the label.

Answer 1

Diameter of the container = 14 cm
Radius = 7 cm
Height of the container = 20 cm

Curved surface area of the container = 2πrh
= 2 x 22/7 x 7 x 20
= 880 cm2

Height of the label = 20 - (2 x 2) = 20 - 4 = 16
Area of the label = 2πrh
= 2 x 22/7 x 7 x 16
= 704 cm2

Hence, area of the label is 704 cm2.