Curved surface area of a right circular cylinder is 4.4 $\mathbf{m}^{2}$ . If the radius of the base of

the cylinder is 0.7 m, find its height. (Assume π=22/7)

Question

Curved surface area of a right circular cylinder is 44 If the radius of the base of the cylinder is 07 m find its height Assume 227

Accepted Answer

Let h be the height of the circular cylinder and r be the radius.

The radius of the base of the cylinder, r = 0.7m

CSA of cylinder = 2πrh

CSA of cylinder = 4.4 $\mathrm{m}^{2}$

Equating both the equations, we have

2 x 22/7 x 0.7 x h = 4.4

Or h = 1

Therefore, the height of the cylinder is 1 m

NCERT Solutions Class 9 Mathematics Solutions for Surface Areas and Volumes - Exercise 13.2 in Chapter 13 - Surface Areas and Volumes