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Question 87
What is the length of the side of an equilateral triangle, if its area is 36√3 sq cm?
Solution
Let the side of equilateral triangle = $$a$$ cm
Area = $$\frac{\sqrt{3}}{4} \times (a)^2 = 36\sqrt{3}$$
=> $$(a)^2=36 \times 4 = 144$$
=> $$a=\sqrt{144} = 12$$ cm
=> Ans - (C)
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