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Area of a Triangle

Find the thir...

Question

Find the third side of the triangle whose two sides are 18cm and 10 cm, respectively and the perimeter equal to 42 cm.

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Solution

Explanation: Perimeter = 42
a + b + c = 42
18 + 10 + c = 42
c = 42 - 28 = 14 cm
Third side = 14 cm.

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