A plus 5 is the side of an equilateral triangle. find it's perimeter

asked Mar 8, 2017 88.2k views

2 votes

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3 votes

one side = a + 5
there are 3 equal sides on an equilateral triangle

3(a+5) = 3a+15

Vexatus answered Mar 9, 2017

7.3k points

4 votes

a+5 = 1 side, so the perimeter is 3(a+5) or P = 3a+15

Davejoem answered Mar 13, 2017

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