- Topics At a Glance
- Basic Shapes & Angles
- Angles
- Parallel Lines & Transversals
- Polygons
- Triangles
- Quadrilaterals
- Angles in a Polygon
- Circles
- Similar Figures
- Perimeter & Circumference
- Area (Polygon, Triangle, Circle, Square)
- Area Formulas
- Area of Irregular Shapes
- 3D Objects (Prisms, Cylinders, Cones, Spheres)
- Volume of Prisms & Cylinders
- Volume of Pyramids & Cones
**Volume of Spheres**- Surface Area
- Pythagorean Theorem

To find the volume of a sphere, follow this simple formula (which took a brilliant ancient Greek mathematician named Archimedes years to derive):

Example 1

The diameter of this sphere is 11.9 cm, so the radius is half of that, 5.95 cm. |

Example 2

You cut an orange in half and measure the radius to be 1.5 in. What is the volume of the orange half? |

Exercise 1

Find the volume of this sphere:

Exercise 2

The circumference of the circular base of this half sphere is equal to 8π cm.What is its volume?