Question

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

9-inch perimeter

A = sq. in.


HELP AND U WILL GET MEDALS IN RETURN!

Answer 1

9 inch perimeter means 3 inches for each side, Use this formula
((s^2)/4) Sqrt[3]

Answer 2

9/4 Sqrt[3]

Answer 3

1/2 ab sinC

Answer 4

imran, isnt it 81/4sqrt 3 ?

Answer 5

9 inches is perimeter; not sides

Answer 6

U got that.