The volume of a sphere refers to the number of cubic units that will exactly fill a sphere. The volume of a sphere can be found or calculate by using the formula V=4/3πr^3, where r represents the radius of the figure.
In this exercise is given that a sphere has a radius of 5 inches and it is asked to find its volume and use 3.14 as the value of π or pi. The first step would be substitute the values into the previous mention formula.
V=4/3πr^3
V=4/3(3.14)(5 in)^3
V=4/3(3.14)(125 in^3)
V=523.33 in^3
The volume of the sphere is 523.33 cubic inches or letter B from the given choices.