Question 75

Find the area of an equilateral triangle whose sides are 12 cm.

Solution

Given, side of the equilateral triangle (a) = 12 cm

$$\therefore\ $$Area of the equilateral triangle = $$\frac{\sqrt{3}}{4}a^2=\frac{\sqrt{3}}{4}\left(12\right)^2=36\sqrt{3}$$

Hence, the correct answer is Option D

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