For a triangle with sides $a, b, c$ and semi-perimeter $s = \dfrac{a+b+c}{2}$, the area is —

Question

Accepted Answer

$\sqrt{s(s-a)(s-b)(s-c)}$

Answer

$s(s-a)(s-b)(s-c)$

Answer

$\sqrt{(s-a)(s-b)(s-c)}$

Answer

$\dfrac{1}{2}\sqrt{abc}$

For a triangle with sides a,b,ca, b, ca,b,c and semi-perimeter s=a+b+c2s = \dfrac{a+b+c}{2}s=2a+b+c​, the area is —