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Sagot :
Answer:
BD = √13cm, AC = 10c,
Step-by-step explanation:
[tex]AB^2 = AD^2 + BD^2\\\\49 = 36 + BD^2\\\\BD = \sqrt{49 - 36} = \sqrt{13}cm\\\\AC^2 = AD^2 +DC^2\\[/tex]
[tex]=36 + 64\\=100[/tex]
[tex]\\AC = \sqrt{100} = 10cm[/tex]
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