What is the area (in cm2) of an equilateral triangle of side 20 cm?
Answer & explanation
Correct answer: option 1
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
= $100\sqrt{3}$