त्रिकोणाचा पाया त्रिकोणाच्या समान क्षेत्रफळ असलेल्या समांतरभुज चौकोनाच्या पायाच्या 5/6 भाग आहे. तर त्रिकोणाच्या समांतरभुज चौकोनाच्या संबंधित उंचीचे गुणोत्तर काय असेल?

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RRB ALP Previous Paper 18 (Held On: 29 Aug 2018 Shift 3)
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  1. 5 : 12
  2. 6 : 5
  3. 5 : 3
  4. 12 : 5

Answer (Detailed Solution Below)

Option 4 : 12 : 5
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Detailed Solution

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दिलेल्याप्रमाणे:

त्रिकोण (आधार) = 5/6 समांतरभुज चौकोन (आधार)

त्रिकोणाचे क्षेत्रफळ = समांतरभुज चौकोनाचे क्षेत्रफळ

वापरलेले सूत्र:

त्रिकोणाचे क्षेत्रफळ = 1/2 × पाया × उंची

समांतरभुज चौकोनाचे क्षेत्रफळ = पाया × उंची

गणना:

त्रिकोण आणि समांतरभुज चौकोनाची उंची अनुक्रमे h आणि H असू द्या.

समांतरभुज चौकोनाचा पाया x असू द्या, त्रिकोणाचा पाया 5x/6 आहे.

त्रिकोणाचे क्षेत्रफळ = समांतरभुज चौकोनाचे क्षेत्रफळ

⇒ 1/2 × पाया × उंची = पाया × उंची

⇒ 1/2 × 5x/6 × h = x × H

∴ h/H = 6/5 × 2 = 12/5 = 12 ∶ 5
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