Question

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

6-inch apothem

A = sq. in.

Someone help me please?

Answer 1

Triangel has equal angles, 60 degrees.
Apothem a = 6 inch
Divide Triangle in two equal pieces by drawing a line (height)
Then you can calculate height from sin 60 = h/6
Arkea of Triangel is 0.5 ah = 0.5 a (6 sin 60)