Respostas

2014-03-05T00:23:20-03:00


a) AB² = AC² + BC²

AB² = 12² + 16²

AB = √400

AB = 20

b) DB = 20 + 16

  DB = 36

AD² = AC² + DC²

AD² = 12² + 36²

AD = √1440

AD = 12√10


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