The perimeter of a triangle is 111 ft. The lengths of two sides are the same. The length of the third side is 6 ft shorter than either of the other two sides. Find the lengths of the sides.
A) The equal sides are 39 ft. The third side is 45 ft.
B) The equal sides are 48 ft. The third side is 54 ft.
C) The equal sides are 44 ft. The third side is 38 ft.
D) The equal sides are 42 ft. The third side is 36 ft.
E) The equal sides are 39 ft. The third side is 33 ft.

Question

Quizplus · Accepted Answer

Let the equal sides be x. Then the third side is x - 6. The equation is 2x + (x - 6) = 111. Solving gives x = 39, so the equal sides are 39 ft and the third side is 33 ft.

The Perimeter of a Triangle Is 111 Ft