లంబకోణ త్రిభుజంలో లంబకోణాన్ని చేసే రెండు భుజాలు 3 సెం.మీ మరియు 4 సెం.మీ పొడవు ఉంటాయి. దాని పరివృత్తం ఇలా ఉంటుంది:

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RRB ALP Previous Paper 2 (Held On: 9 Aug 2018 Shift 2)
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  1. 5π సెం.మీ 2
  2. 7π సెం.మీ 2
  3. 6.75π సెం.మీ 2
  4. 6.25π సెం.మీ 2

Answer (Detailed Solution Below)

Option 4 : 6.25π సెం.మీ 2
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లంబకోణ త్రిభుజంలో లంబ కోణాన్ని చేసే రెండు భుజాలు 3 సెం.మీ మరియు 4 సెం.మీ పొడవు,

⇒ కర్ణం పొడవు = (32 + 42 )1/2 = 5 సెం.మీ.

⇒ పరివృత్తం వ్యాసార్థం = 5/2 = 2.5 సెం.మీ

∴ వైశాల్యం = 22/7 × (2.5)2 = 6.25π సెం.మీ2

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