An equilateral is a 3-sided plygon in which all sides have the same length. write a formula for the perimeter, p, of an equilateral triangle whos perimeter is 72 inches.

Lets a = side

A formula for the perimeter, P, of an equilateral triangle whos perimeter is 72 inches

P = 3a

72 = 3a

or

3a = 72

answer

3a = 72

the correct answer to your question is a. 4^4

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