Question

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

9-inch perimeter

Answer 1

area =[under root3/4] *(side)^2
=[under root3/4]*81
=35.07

Answer 2

so like i said before sqrtanswer

Answer 3

ok//=[(sqrt3)/4] *81
=81 (sqrt3)/4

Answer 4

right?