Question

A triangle has side lengths of (4m+3n) centimeters, (8m+10p) centimeters, and (2p+2n) centimeters. Which expression represents the perimeter, in centimeters, of the triangle?
Answer
Multiple Choice Answers
5, n, plus, 12, p, plus, 12, m5n+12p+12m
4, n, p, plus, 18, m, p, plus, 7, m, n4np+18mp+7mn
15, n, p, plus, 14, m, p15np+14mp
4, p, plus, 12, m, plus, 13, n4p+12m+13n

Answer 1

Perimeter = (4m+3n) + (8m+10p) + (2p+2n)
= (4m+8m) + (10p+2p) + (3n+2n)
= 12m + 12p + 5n.

So the correct choice is 5n + 12p + 12m (the first option).