18 divided by 60 = 0.3
0.3 x 100 = 30
18 is 30% of 60
Given:
Radius of the cone = 3 inches
Height of the cone = 8 inches
To find:
The volume of the cone, in terms of π.
Solution:
We know that, the volume of a cone is:

Putting
, we get




Therefore, the volume of the cone is
.
B = 100(1 + 0.04)^12 = 100(1.04)^12 = 100(1.601) = $160.10