Question

The perimeter of a triangle is 25 feet.

What is the length of the unknown side?
one side is-5.2 ft
another side is-8 ft

Answer 1

25 = 5.2 + 8 + x

5.2 + 8 = 13.2

25 = 13.2 + x

25 - 13.2 = 11.8

11.8 = x

The unknown side is 11.8 ft.