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.
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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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