Question

An equilateral triangle has a perimeter of 81. The side measures are

Find the value of p.
(4p +3), (7p-15), and (2p +15).

Answer 1

p = 6

Explanation:

An equilateral triangle has 3 equal sides, meaning that each side is 81/3 = 27

That means that the following are true:

4p + 3 = 27 -> 4p = 24 -> p = 6

7p - 15 = 27 -> 7p = 42 -> p = 6

2p + 15 = 27 -> 2p = 12 -> p = 6

thus, p = 6