In this case, we'll have to carry out several steps to find the solution.
Step 01:
Data
df ====> do + 10%
height f = height o
% v = ?
Step 02
df = do + 10%
= do(1 + 0.1)
= do (1.1)
V = h π r² = h π ( d /2)²
%V = (Vf - Vo / Vo) * 100
Vf - Vo = h π ( df /2)² - h π ( do /2)²
= ( 1.1 do /2)² - ( do /2)²
= 1.21/ 4 do² - 1/4 do ²
= 0.0525 do ²
% V = (0.0525 do² / do ²) * 100
% V = 5.25 %
The answer is:
Volume increased by 5%.