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Question

If the area of an equilateral triangle is 363 cm2, find its perimeter.

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Solution

Area of the equilateral triangle of side a = 34×a2
34×a2 = 36√3
a2 = 36 x 4
a = 12
Perimeter of equilateral triangle = 3a = 3 x 12 = 36 cm


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