If the side of an equilateral triangle is 20 cm, then what is its area?

$110 \sqrt{3}$ cm2 $125 \sqrt{3}$ cm2 $200 \sqrt{3}$ cm2 $100 \sqrt{3}$ cm2

$100 \sqrt{3}$ cm2

Area of a equilateral triangle = \(\frac{\sqrt {3}}{4}\) × (side)2 Side = 20cm Then the area = \(\frac{\sqrt {3}}{4}\) × (20)2 = $100 \sqrt{3}$ cm2