Question

Height of the equilateral triangle is 6cm,find its area.

Answer 1

Altitude=height=6cm
Let length of side be 'x'
So, √3/2 a =6
So x=12/√3 = 4√3
Length = 4√3
Therefore , area of triangle = √3/4 × x^2
=√3×4×3
=12√3
Therefore , the area of the triangle is 12√3