Question

If radius and height of a cylinder increase by 20% and15% respectively. then what is the % change in curved surface 2?
A) 41%
B) 38%
C) 33%
D) 44%

Answer 1

percentage should be changed into fraction and we have to find apply the curved surface area of a cylinder formula and then find the percentage

Answer 2

Hence the answer is option B) 38%