the side of a triangle 3 cm and 5 cm and 6 cm. what is its area
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Step-by-step explanation:
By herons formula.
s=(3+5+6)/2=14/2=7.
Area of triangle=root[s(s-a)(s-b)(s-c)]
=root[7(7-3)(7-5)(7-6)]
=root[7×4×2×1]
=root 42
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