# The altitude of an equilateral triangle is 18 inches. What is the length of a side?

##### 2 Answers

#### Answer:

The side

#### Explanation:

The altitude of the triangle

Let us denote the side of the triangle as

The formula for calculating the altitude of an equilateral triangle is :

Altitude

#### Answer:

Length of the side of the triangle is

#### Explanation:

If the length of the side of a triangle is

As the perpendicular from vertex divides base equally, we can find height

Hence

But as height is