Question

An equilateral triangle has an altitude of 4.8in. What are the length of the sides? Round to the nearest tenth.

Answer 1

5.5 in

Explanation:

The altitude is (√3)/2 times the length of a side, so the side length is the inverse of that times the length of the altitude:

side length = (2/√3)(4.8 in) ≈ 5.5 in