Question

What is Hero’s or Heron’s formula?

Answer

Hero’s of Heron’s formula is connect the area of a triangle with its sides, we use this formula. If a, b and c are the length of the sides of a triangle, its area is
$\mathrm{Area\; of\; triangle}=\sqrt{s\left(s–a\right)\left(s–b\right)\left(s–c\right)}$
$\mathrm{where\; \; \; }s=\frac{a+b+c}{2}$

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