ΔABC-യിൽ, AB = 8 സെ.മീ. D യിൽ BCയെ ഛേദിക്കാൻ ∠A ആന്തരികമായി രണ്ടായി ഛേദിക്കപ്പെട്ടിരിക്കുന്നു. BD = 6 cm, DC = 7.5 cm. CA യുടെ നീളം എന്താണ്?

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RRB ALP Previous Paper 5 (Held On: 10 Aug 2018 Shift 3)
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  1. 12 cm
  2. 12.5 cm
  3. 10.5 cm
  4. 10 cm

Answer (Detailed Solution Below)

Option 4 : 10 cm
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AB = 8 cm, യിൽ BCയെ ഛേദിക്കാൻ ∠A ആന്തരികമായി രണ്ടായി ഛേദിക്കപ്പെട്ടിരിക്കുന്നു. 

⇒ AB/AC = BD/CD

⇒ 8/AC = 6/7.5

∴ AC = 10 cm
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