Question

If a regular triangle has a perimeter of `15x+84`, what is an expression for the length of one of its sides?

Answer 1

side = `5x+28`

Explanation:

A regular triangle has 3 sides which are equal in length and the size of each angle is `60°`

TO find the length of one side, divide the perimeter by 3.

side = `(15x+84)/3`

`=5x +28`

An exact answer cannot be calculated until the value of `x` is known.