Question

determine el area de triangulo equilatero cuyo lado mide 12 cm,usando formula heron ​

Answer 1

Explicación paso a paso:

Perímetro

A+B+C

12cm+12cm+12cm=36cm

P=36cm

Semiperimetro

$s = \frac{p}{2} \\ s = \frac{36}{2} \\ s = 18$

$a = \sqrt{s(s - a)(s - b)(s - c)} \\ a = \sqrt{18(18 - 12)(18 - 12)(18 - 12)} \\ a = \sqrt{18(6)(6)(6)} \\ a = \sqrt{3888} \\ a = 62.35$