Volume of a sphere

V=\tfrac43\pi r^3

Result unit: volume units

What it describes

The volume of a ball with radius

r

V

volume

r

radius

The volume of a ball grows with the cube of the radius — a small change in the radius changes the volume a lot.

Balls: balls, planets, droplets.

Radius of the ball

r=3

. Find the volume.

Substitution

r=3

Result

V=\tfrac43\pi\cdot27=36\pi\approx113.1

Found this formula useful? Share it.

It's free — send it to a friend who's revising.

Teaching? Embed this formula on your site.

Free widget — paste it on your school site, blog or notes. It links to the full version.