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%.