Question

Find the area of an equilateral triangle (regular 3-gon) with the given measurement.

6-inch radius

A = sq. in.

Answer 1

can you do it from here? that small triangle is a 30-60-90 triangle...

Answer 2

A = 1/2aP
A = 1/2(3)(P)
A = 3/2(P)
To find the perimeter, use the 30-60-90 ratio, find the side length of the side opposite the 60º angle and multiply it by 6.

Answer 3

A = 3/2(18√3)
A = 27√3

Answer 4

Do you understand?