Question

Aplicando o Teorema de Pitagoras, encontre a medida X:

Answer 1

a² = b² + c²

13² = 5² + x²

169 = 25 + x²

169 - 25 = x²

144 = x²

x = √144

x = 12cm

Answer 2

$\large\boxed{\begin{array}{l} \rm \: x {}^{2} = 13 {}^{2} - 5 {}^{2} \\ \rm \: x {}^{2} = 169 - 25 \\ \rm \: x {}^{2} = 144 \\ \rm \: x = \sqrt{144} \\ \rm \: x = 12 \: cm \end{array}}$