# Volume of a Sphere

## Volume of a Sphere Lesson

### Sphere Volume Formula

The formula for volume of a sphere is given as:

V = 43πr3

Where V is the volume and r is the radius.

INTRODUCING

### Volume of a Sphere Example Problems

Let's go through a couple of example problems together to practice finding the volume of a sphere.

#### Example Problem 1

What is the volume of a sphere with a radius of 10?

Solution:

1. Plugging the radius into the volume formula, we get:
2. V = 43πr3
3. V = 43π(103) = 40003π
4. The volume of the sphere is 40003π.

#### Example Problem 2

What is the volume of a sphere with a diameter of 10?

Solution:

1. Dividing the diameter by 2 to find radius, we get:
2. 10/2 = 5
3. r = 5
4. Plugging the radius into the volume formula, we get:
5. V = 43πr3
6. V = 43π(53) = 5003π
7. The volume of the sphere is 5003π.
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