Calculate the area of the equilateral triangle using the formula for area of a regular polygon, and compare it to Bianca’s answer.

Question

Revolt · Accepted Answer

The apothem, rounded to the nearest tenth, is units.:

2.9

The perimeter of the equilateral triangle is units.:

30

Therefore, the area of the equilateral triangle is , or approximately 43.5 units2.:

1/2(2.9)(30)

The calculated areas are .:

the same, despite using different formulas

Area of Regular Polygons