Question

If radius and height of a cylinder increase by 20% and15% respectively. then what is the % change in curved surface area?
A) 41%
B) 38%
C) 33%
D) 44%

Answer 1

If radius and height of a cylinder increase by 20% and15% respectively. then what is the % change in curved surface area?

A) 41%B) 38%C) 33%D) 44%

Answer:   B) 38% 

SOLUTION

% Change in Curved Surface Area is given by 



⇒20 + 15 + 20×15100 = 38%

Answer 2

b is right option. . . . . .