What is the area of the equilateral triangle if the base BC=6?

What is the area of the equilateral triangle if the base BC=6?

A 9√3

B 18√3

C 26√3

D 30√3

Solution

Correct Answer: Option A

If a represents the side of an equilateral triangle, then its area = (a2√3)/4

Thus,

Here, the area = (6)2 * √3 /4

= 36 * √3 /4

= 9√3