Question

VII. Diameter of a Cylinder is 2r cm and its height is h cm then its curved surface area
will be ........... cm?
a) 4ter 2
b) 2 trh
c) 4 trh
d) ir 2​

Answer 1

1760 Cm²

___________

Given:

Diameter of cylinder ( D ) = 28Cm.

Radius of cylinder (R)

$= \frac{d}{2} = 14cm$

Height of cylinder (H)= 20Cm.

As we know that, curved surface area of cylinder is

given as

$csa = 27rh = 2 x \frac{22}{7} x 14 x 20 = 1760cm {}^{2}$