Question

Two sides of a triangle have the same length, which is 3 times the third side. If the difference in the longer side and shorter side is10 units, find the shorter side of the triangle. Solve for its perimeter.

Answer 1

Answer:

13,21m,21m

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.