Enter the center height and the length of the side of the pyramid to calculate the slant height.

## Slant Height Formla

The following formula is used to calculate a slant height.

L = SQRT ( H^2 + (S/2)^2)

- Where L is the slant height
- S is the length of any side (Use the diameter at base for a cone.)
- H is the height from the center to the top of the pyramid

## Slant Height Definition

A slant height is defined as the total length from the center of a side, traveling along the surface of a side, to the top of the pyramid or cone.

## Slant Height Example

How to calculate a slant height?

**First, determine the length of one side.**Measure the length of a side.

**Next, determine the height from center to top.**Measure the height from center to tip.

**Finally, calculate the slant height.**Calculate the slant height using the formula above.

## FAQ

**What is a slant height?**

A slant height is a measure of the distance from the top of a pyramid or cone to the center of the side or a point along the base for cone.