Respostas

2014-01-30T22:18:40-02:00
2014-01-30T22:23:22-02:00
 a)  X² = 8² + 6²
X² = 64 + 36
X = √100
X = 10

b)   X² = 15² + 8²
X² = 225 + 64
X = √289
 X = 17