Question

A Tin is in a cylindrical shape whose base has a diameter of 14 cm and height 20 cm. A label is placed 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

Sol:
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.

Answer 2

Answer:

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Step-by-step explanation:

Sol:

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.