Question

Two equal sides of a triangle are each 5 m less than twice
the third side. If the perimeter of the triangle is 105 m.
Find the length of its sides?​

Answer 1

Step-by-step explanation:

Let the third side be x m.

Then the two equal sides are of length (2x−5) m.

Perimeter of triangle = 55 m.

⟹x+(2x−5)+(2x−5)=55

⟹5x−10=55

⟹x=13

Hence, the length of the triangle's sides are 13m, 21m and 21m.