Question

Find the curved surface area (m${}^2$) of a cylindrical concrete pillar whose radius and height are 70 cm and 10 m respectively.

• A. 44

Answer 1

The correct option is A 44
Given:
Radius = 70 cm = 0.7 m
Height = 10 m

Curved surface area of the pillar = 2$\pi$rh

Curved surface area of the pillar = $2\times \frac{22}{7}\times 0.7\times 10$

Curved surface area of the pillar = 44 $m^2$