Question

No triângulo retângulo a seguir, qual o valor de x?
A) 3 cm
B) 4 cm
C) 5 cm
D) 6 cm
E) 7 cm

Answer 1

$\sf{x^2+2^2=(\sqrt{29})^2}\\\sf{x^2+4=29}\\\sf{x^2=29-4}\\\sf{x^2=25}\\\sf{x=\sqrt{25}}\\\huge\boxed{\boxed{\boxed{\boxed{\sf{x=5~cm}}}}}$