Question

Срочно!!!1!1!1!1!!!1!!!11!1!

Answer 1

$a=8\; ,\; \; b=9\; ,\; \; c=7\sqrt2\\\\a^2+b^2+c^2=64+81+49\cdot 2=243\\\\q=\sqrt{\frac{a^2+b^2+c^2}{3}}=\frac{\sqrt{243}}{3}=\frac{\sqrt{81\cdot 3}}{3}=\frac{9\sqrt3}{3}=3\sqrt3$