Question

A small plastic ball has a diameter of 8 centimeters. What is the volume of the ball

Answer 1

Given:

Diameter of ball = 8 cm

To find:

The volume of the ball.

Solution:

We know that the radius of sphere is half of is diameter.

It is given that the the diameter of ball is 8 cm. So, the radius of the ball is:

$r=\dfrac{8}{2}$

$r=4$

The radius of the ball is 4 cm.

The volume of a sphere is:

$V=\dfrac{4}{3}\pi r^3$

Where r is the radius of the sphere.

Putting $\pi = 3.14, r=4$ in the above formula, we get

$V=\dfrac{4}{3}(3.14)(4)^3$

$V=\dfrac{4}{3}(3.14)(64)$

$V=267.946667$

$V\approx 267.95$

Therefore, the volume of the ball is about 267.95.