Question

An equilateral triangle has a perimeter of 36 cm. what is the area?

Answer 1

A = 62.35 cm2

Explanation:

The perimeter of the equilateral triangle is 36cm

each side = 36/3 = 12 cm

The formula for area of an equilateral triangle is:

`(√(3) )/(4)` (side)2

the side =12cm

area =
`(√(3) )/(4)` (side)2

=0.433 x (12)2

=0.433 x 144

area= 62.35 cm2