Question

no triângulo a seguir, o valor de x é:​

Answer 1

Resposta:

Seja h a altura do triangulo.

\begin{gathered}h^{2} = 5^{2}-3,8^{2}\\h^{2} =10,56\\\\ x^{2} =h^{2}+6,2^{2}\\\\ x^{2}=10,56+38,44\\\\x^{2} =49\\\\x=7\end{gathered}

h

2

=5

2

−3,8

2

h

2

=10,56

x

2

=h

2

+6,2

2

x

2

=10,56+38,44

x

2

=49

x=7