The sides of a triangle in the ratio 5 : 12 : 13. What is the length of each side of the triangle if the perimeter of the triangle is 15 in.?

Answer 1

Add the ratios together to see what they are compared to the total length.

5+12+13=30.

The perimeter, 15, is half of 30, so 15:30=1:2 divide them all by 2 to get their lengths.

Answer: 2.5 in., 6 in., and 6.5 in.