**The surface area of a sphere is 1386 sq.cm. Find its volume.**

surface area = 1386

radius = sqrt( ( surface_area )/ ( 4 * PI ))

radius = 10.5

volume = (4/3) * PI * 10.5 ^ 3

volume = 40

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