Question

Calculati cateta unui triunghi dreptunghic si isoscel cu aria de 18 cm patrati. Va rog dau coronita..

Answer 1

$A=18 \ cm^2 \\ a=b=n \\ A=\frac{a \cdot b}{2}=\frac{n^2}{2} \\ n^2=2A \\ n^2=18 \ cm^2 \cdot 2 \\ n^2=324 \ cm^2 \\ n=\sqrt{324} \ cm \\ \boxed{n=18 \ cm}$