Answer:
Step-by-step explanation:
V = 3.14 × r² × h
r= 20/2 =10 cm
h = 11 cm
V = 3.14 x10² x 11 = 3454 cm³
Answer:
b
Step-by-step explanation:
4 * 12 * x = 384
48 * x = 384
x = 8
Working out

Percentage= Difference/Original value x 100
Difference =4735-4049=686
P=686/4735
=0.1448... × 100
=14.5