Question

# Two sides of a triangle are $$12\ cm$$ and $$14\ cm$$. The perimeter of the triangle is $$36\ cm$$. What is the length of third side

Solution

## Given two sides of the triangle are $$12cm$$ and $$14cm$$ the perimeter of triangle $$=36cm$$ Let the length of the third side $$=a cm$$ the perimeter of triangle = sum of the length of sides of the triangle. Accoreding to problem, $$12+14+a=36$$ $$\Rightarrow 26+a=36$$  $$\Rightarrow a=36-26$$  $$\Rightarrow a=10$$  $$\therefore$$ length of the third side of triangle $$=10cm$$MathematicsNCERTStandard VI

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