Question

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

6-inch radius

A = sq. in.

Answer 1

what radius, circum or in?

Answer 2

For equilateral triangles, when s = the length of a side, the area equals s squared times the square root of 3 over 4 (area = s^2(sqrt(3)/4)). So when s = 6, the area = 36*sqrt(3)/4 = 9*sqrt(3).


Hope this helps better your understanding.

Answer 3

But here s is not 6.

Answer 4

Radius of a triangle?? How?

Answer 5

ah, true. but i only did an example...