the side of a triangle are 12 CM 16 cm if two of its sides are 15cm and 20cm find the third side
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Sides of triangle a=12cm, b=16cm and c=20cm
s=2a+b+c=212+16+20=248
Area of a triangle=s(s−a)(s−b)(s−c)
=(24−12)(24−16)(24−20)
=(12)(8)(4)
=4×3×4×3×4
=4×3×2=24sq.cm
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