दो समरूप त्रिभुजों की दो संगत भुजाओं की लंबाइयों का अनुपात 15 : 14 है। इन दो त्रिभुजों के क्षेत्रफलों का अनुपात, उल्लिखित क्रम में, है:

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RRB NTPC Graduate Level CBT-I Official Paper (Held On: 09 Jun, 2025 Shift 1)
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  1. 226 : 197
  2. 15 : 14
  3. 225 : 196
  4. 15√15 : 14

Answer (Detailed Solution Below)

Option 3 : 225 : 196
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दिया गया है:

दो समरूप त्रिभुजों की दो संगत भुजाओं की लंबाइयों का अनुपात 15 : 14 है।

प्रयुक्त सूत्र:

दो समरूप त्रिभुजों के क्षेत्रफलों का अनुपात उनकी संगत भुजाओं के अनुपात का वर्ग होता है:

(क्षेत्रफलों का अनुपात) = (भुजाओं का अनुपात)2

गणना:

qImage687602dec44a3f8d9139ef56

भुजाओं का अनुपात = 15 : 14

⇒ क्षेत्रफलों का अनुपात = (15 : 14)2

⇒ क्षेत्रफलों का अनुपात = (15)2 : (14)2

⇒ क्षेत्रफलों का अनुपात = 225 : 196

∴ सही उत्तर विकल्प (3) है।

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