Question

solve it with heron's formula 10,10,10​

Answer 1

$s = \frac{a + b + c}{2} (s \: is \: the \: semiperimeter) \\ \frac{10 + 10 + 10}{2} \\ = \frac{30}{2} \\ = 15 \\ \sqrt{s(s - a)(s - b)(s - c)} \\ = \sqrt{15(15 - 10)(15 - 10)(15 - 10)} \\ = \sqrt{15(5)(5)(5)} \\ = \sqrt{15(125)} \\ = \sqrt{1,875} \\ = 25 √3 = 43.30127018922193.$

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