Question

In any triangle if a, b, c, are the lengths of three sides of a triangle. St s-a =7 s-b =5 s-c =3. Then perimeter of ∆ is _______

Answer 1

a,b,c such that a+b+c=7 and the sum of any two is larger than the third. Then apply Heron's formula for the area: Let S be a+b+c , then A=√s (s-a) (s-b) (s-c ...

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