Question

Find

The lateral or curved surface area of a closed cylindrical petrol storage tank that is 4.2 m in diameter and 4.5 m high.

`["Assume "pi=22/7]`

Answer 1

Height (h) of cylindrical tank = 4.5 m

Radius (r) of the circular end of cylindrical tank = (4.2/2)m = 2.1m

 

Lateral or curved surface area of tank = 2πrh

`=(2xx22/7xx2.1xx4.5)m^2`

= (44 × 0.3 × 4.5) m²

= 59.4 m²

Therefore, CSA of tank is 59.4 m².