Question

Find the total surface area of a cylinder, the diameter of whose base is 7 cm and height is 60 cm.

• A. 1380 $c{m}^2$
• B. 1150 $c{m}^2$
• C. 1397 $c{m}^2$
• D. 1275 $c{m}^2$

Answer 1

The correct option is C 1397 $c{m}^2$

We have,
Diameter of cylinder = 7 cm
So, Radius of cylinder =$\frac{7}{2}$

Height of cylinder = 60 cm

By using the formula,

Total surface area of cylinder = 2πr (h+r)
$=2\times \frac{22}{7}\times \frac{7}{2}(60+\frac{7}{2})=1397c{m}^2$