Question

two equal sides of triangle are each 5 metres less than twice the third side if perimetre of triangle is 55 metres find lengths of its sides

Answer 1

Answer:

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.

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

x = 21 meters. Therefore, two sides of the triangle are 21 meters and the side of the triangle is 13 meters. Now, if we add all the three sides, we must get 55 meters. 21+21+13 = 55 meters.