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Mathematics

The lengths of two sides of a triangle are 12 cm and 14 cm. The perimeter of the triangle is 36 cm. What is the length of its third side?

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Answer

Given:

Two sides of the triangle = 12 cm and 14 cm

Perimeter of the triangle = 36 cm

Let x be the third side of the triangle.

Perimeter of triangle = Sum of all sides

⇒ 36 = 12 + 14 + x

⇒ 36 = 26 + x

⇒ x = 36 - 26

⇒ x = 10 cm

Hence, the length of the third side is 10 cm.

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