What is the area (in cm2) of an equilateral triangle of side 20 cm?

$100\sqrt{3}$ 200 100 $100\sqrt{2}$

$100\sqrt{3}$

Side of equilateral trignale = 20cm We know that The area of equilateral triangle = \(\frac{ \sqrt {3} }{4}\) × (side)2 = \(\frac{ \sqrt {3} }{4}\) × (20)2 = $100\sqrt{3}$