If the sides of a triangle is 20cm,24cm and 25cm.Find the semi perimeter of the triangle. [1 MARK]

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Solution

Concept : 0.5 Mark
Application 0.5 Mark

Semi perimeter of the triangle = $\frac{(a + b + c)}{2}$ = $\frac{(20 + 24 + 25)}{2}$ = $\frac{69}{2}$ cm

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