Week 6 – Surface Area and Volume of Pyramids and Cones

A right pyramid is a pyramid with apex(the vertex at the tip of the pyramid) and with triangular sides.

To find the volume, you need to know what the dimensions of the base and the height.

Example

To find the surface area of a right pyramid, you need to know the slant height and the base length.

Example

If you do not know either of these dimensions, you can use The Pythagorean Theorem to help you find it.

Example

A right cone is a 3D shape with a circular base and vertex directly above the base.

To find the volume of cone, you need to know the dimensions of the base and the height.

Example


To find the surface area of a right cone, you need to know the radius and the slant height.

Example

If you don’t know either of these dimensions, you can use The Pythagorean Theorem to help you find it.

Example

With using The Pythagorean Theorem, it became a lot easier to find the volumes and surface areas. As long as I knew all the dimensions and inputted it correctly into my calculator, I got the right answer.