This site from the Math Forum provides the formulas for finding the area and volume of a sphere.

MathWorld gives a simple and complex definition of a hemisphere. The formula for the volume of a hemisphere is also given.

Test your knowledge on how to calculate cell size with this quiz.

In this activity, students learn to calculate volume of a sphere and a rectangular prism. They explore methods of determining how many volleyballs can be placed in a room.

Use this online calculator to calculate the volume of geometric solids including a capsule, cone, frustum, cube, cylinder, hemisphere, pyramid, rectangular prism, sphere, and spherical cap.