Question

Calcule o que se pede
Triângulos retângulos

Answer 1

$\Large\boxed{\begin{array}{l}\sf x^2+(6\sqrt{3})^2=12^2\\\sf x^2+36\cdot3=144\\\sf x^2+108=144\\\sf x^2=144-108\\\sf x^2=36\\\sf x=\sqrt{36}\\\huge\boxed{\boxed{\boxed{\boxed{\sf \blue{x=6}}}}}\green{\checkmark}\end{array}}$