Question
The perimeter of an equilateral triangle is 72√3 cm.
Find its height.Solution
The perimeter of an equilateral triangle = 72√3 3a = 72 √  3 a = 24 √  3 height of the equilateral triangle = √  3 a /2 = √  3 ×24 √  3 / 2 = 36 cmÂ
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