If the side of an equilateral triangle is 16 cm, then what is its area ?
Answer & explanation
Correct answer: option 4
We know that,
Area of a equilateral triangle = \(\frac{\sqrt {3}}{4}\) × (side)2
Side = 16cm
Area of a equilateral triangle = \(\frac{\sqrt {3}}{4}\) × (16)2
= \(\frac{\sqrt {3}}{4}\) × 256 = $64\sqrt{3} cm^2$