A triangle whose sides are 5,12, and 13 inches is similar to a traingle whose longest side is 39 inches. What is the perimeter of the larger triangle?

Question

Anonymous · Accepted Answer

32

Reiny · Answer

the perimeter of two similar triangles is proportional to the ratio of their sides ratio of sides = 13:39 = 1:3 the perimeter of the smaller is 30 so the perimeter of the larger is 90.