A sphere is a regular three-dimensional object in which every cross-section is a circle.
Volume is the amount of space an object occupies and is measured in cubic units.
Formula to calculate volume of a sphere.
![How to Calculate Volume of a Sphere.](https://www.learntocalculate.com/wp-content/uploads/2020/04/volume-of-a-sphere-5.png)
‘r’ is the radius of the sphere
π is a constant estimated to be 3.142 or
![How to Calculate Volume of a Sphere.](https://www.learntocalculate.com/wp-content/uploads/2020/04/how-to-calculate-circumference.png)
Example:
Calculate the volume of a sphere whose radius is 3.5 cm.
![How to Calculate Volume of a Sphere.](https://www.learntocalculate.com/wp-content/uploads/2020/04/volume-of-a-sphere-3-1.png)
Hence, the volume of the sphere is 179.67 cm³