Respostas

2013-11-22T00:54:36-02:00
Teorema de pitágoras
x² = 12² + 5²
x² = 144 + 25
x² = 169
x = raiz (169)
x = 13

7,5² = 4,5² + x²
x² = 56,25 - 20,25
x = raiz(36)
x = 6

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