सूचीचा पाया लंब समद्विभूज त्रिकोण आहे ज्याचा कर्ण 3√2 सेमी आहे. सूचीची उंची 12 सेमी असेल तर सूचीचे घनफळ शोधा?

  1. 54 सेमी3
  2. 44 सेमी3
  3. 64 सेमी3
  4. 52 सेमी3

Answer (Detailed Solution Below)

Option 1 : 54 सेमी3
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Detailed Solution

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दिल्याप्रमाणेः

त्रिकोणाच्या पायाचे कर्ण = 3√2 सेमी

सूचीची उंची = 12 सेमी

वापलेले सूत्रः

काटकोन त्रिकोणात;

(कर्ण) 2 = (पाया)2 + (उंची)2

त्रिकोणाचे क्षेत्रफळ = (1/2) × पाया × उंची

सूचीचे घनफळ = पायाचे क्षेत्रफळ × उंची

गणना :

समद्विभूज त्रिकोणात; दोन बाजू समान आहेत.

समान बाजू = a सेमी.

(3√2)2 = a2 + a2

⇒ 18 = 2a2

⇒ a2 =  9 सेमी2

⇒ a = 3 सेमी

त्रिकोणी पायाचे क्षेत्रफळ = (1/2) × 3 × 3

⇒ 9/2 सेमी2

सूचीचे घनफळ = 12 × (9/2) सेमी3

⇒ 54 सेमी 3

∴ सूचीचे घनफळ 54 सेमी 3 आहे.

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