Question

Two sides of a triangle have the same length. The third side measures 2 m less than twice the common length. The perimeter of the triangle is 22 m. What are the

lengths of the three sides?
What is the length of the two sides that have the same length?

Answer 1

Explanation:

first side: x

second side: x

third side: x+x-2 = 2x-2

perimeter (sum of the sides): 22.

therefore

x+x+2x-2=22

4x-2=22

4x=24 /:4

x=6 [m]

so:

1st side: x=6m

2nd side: x=6m

3rd side: 2x-2=2*6-2=10m.

Answer: these sides have 6m, 6m, 10m length.