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General
Easy

Question

The side of an equilateral triangle is 16 units. What will be the double of its area ?

hintHint:

Area of an equilateral triangle = fraction numerator square root of 3 over denominator 4 end fraction a2

The correct answer is: 221.7 cm2


    It is given that side of the triangle = 16 units
    Area of an equilateral triangle = fraction numerator square root of 3 over denominator 4 end fraction a2 = fraction numerator square root of 3 over denominator 4 end fraction 162
    = 64square root of 3 cm2
    Double of the area = 2 cross times 64square root of 3
    = 128square root of 3 = 221.7 cm2

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