Question

помогите пожалуйста срочно

Answer 1

1) S = a^2 * sina = 8 * sin60 = 8 * sqrt(3)/2 = 4*sqrt(3)


2)
$s = \sqrt{p(p - a)(p - b)(p - c)}$
p = P/2 = (13 + 13 + 26)/2 = 52/2 = 26

$s = \sqrt{26(26 - 13)(2 6 - 13)(26 - 26)} = 0$