QS.If the sides of a triangle are 13 cm, 84 cm and 85
cm. Then find the area of the triangle
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Answer:
S=a+b+c/2
=13+84+85\2
=182/2
=91
area of the ∆=√s(s-a)(s-b)(s-c)
=√91(91-13)(91-84)(91-85)
=√298116=546
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