Question

Aplicando as relações métricas no triângulo retângulo, o valor de b é: *


b=6
b=7
b=8
b=9

Answer 1

$\Large\boxed{\begin{array}{l}\sf b^2=(3+9)\cdot 3\\\sf b^2=12\cdot3\\\sf b^2=36\\\sf b=\sqrt{36}\\\sf b=6\end{array}}$