సమాంతర చతుర్భుజి PQRS లో, 8 సెం.మీ మరియు 12 సెం.మీ. ల భుజాలు, 10 సెం.మీ పొడవు గల కర్ణం ఉంది. మరో కర్ణం యొక్క పొడవు  సుమారు :

This question was previously asked in
RRC Group D Previous Paper 21 (Held On: 17 Sept 2018 Shift 2)
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  1. 17.8 సెం.మీ
  2. 17.5 సెం.మీ
  3. 17 సెం.మీ
  4. 18 సెం.మీ

Answer (Detailed Solution Below)

Option 1 : 17.8 సెం.మీ
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Detailed Solution

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మరో కర్ణం యొక్క పొడవు = x సెం.మీ అనుకొనుము

ప్రశ్న ప్రకారం,

⇒ x2 + 102 = 2(8+ 122)

⇒ x2 + 100 = 2(64 + 144)

⇒ x2 = 2 × 208 – 100

⇒ x2 = 316

⇒ x = 17.8

∴ మరో కర్ణం యొక్క  పొడవు సుమారు 17.8 సెం.మీ.

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