**If the diameter of a sphere is 7 cm, find its volume.**

diameter = 7

radius = 7 / 2

radius = 3.5

volume = (4/3) * PI * 3.5 ^ 3

volume = 13

A three dimensional object shaped like a ball. Every point on the surface has the same distance from the center.

where,

d = diameter

C = circumference

r = radius

V = volume

SA = surface area