Question

Two equal sides of a triangle are each 5 metres less than twice the third side.If the perimeter of the triangle is 55 meters,find the length of its sides.​

Answer 1

Answer:

Third side of triangle = 13m

One equal side of triangle = 21 m

The other equal side of triangle =21m

Step-by-step explanation:

Let the both equal side of triangle = 2{2(y)-5}m

Let the third side of triangle = y m

Perimeter = sum of all the three sides

=>55 = y+ 2{2(y)-5}

=>55 = y + 4y-10

=>65 = 5y

=>13 = y

Third side of triangle = 13m

One equal side of triangle = 2(y)-5 = 2(13)-5 = 21 m

The other equal side of triangle = 2(y)-5= 2(13)-5=21m

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