Question

The height of an equilateral triangle is 10, square root of, 3, end square root10
3
​
feet. What is the perimeter of the triangle?

Answer 1

Height h = (√3/2)·s for an equilateral triangle, so s = 2h/√3.
If h = 10√3, then s = 2(10√3)/√3 = 20.
Perimeter = 3s = 3·20 = 60 feet.