विशालकोन त्रिकोणाची सर्वात लांब बाजू 7 सेमी असून त्रिकोणाच्या इतर दोन बाजू 4 सेमी व 5 सेमी आहेत. त्रिकोणाचे क्षेत्रफळ शोधा.

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SSC MTS (2022) Official Paper (Held On: 18 May, 2023 Shift 1)
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  1. \(1\sqrt{3} \) सेमी2
  2. \(6\sqrt{3} \) सेमी2
  3. \(3\sqrt{2} \) सेमी2
  4. \(4\sqrt{6} \) सेमी2

Answer (Detailed Solution Below)

Option 4 : \(4\sqrt{6} \) सेमी2
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SSC MTS 2024 Official Paper (Held On: 01 Oct, 2024 Shift 1)
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Detailed Solution

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दिलेल्याप्रमाणे:

पहिली बाजू (a) = 4 सेमी

दुसरी बाजू (b) = 5 सेमी

तिसरी बाजू (c) = 7 सेमी

वापरलेले सूत्र:

हेरॉनचे सूत्र

क्षेत्रफळ = √{S × (S - a) × (S - b) × (S - c)} 

जिथे, S = (a + b + c)/2

गणना:

S = (4 + 5 + 7)/2 = 16/2 = 8

त्रिकोणाचे क्षेत्रफळ =  √{S × (S - a) × (S - b) × (S - c)} 

⇒ √{8 × (8 - 4) × (8 - 5) × (8 - 7)}

⇒ √{8 × 4 × 3 × 1}

⇒ √{16 × 6}

⇒ √96 = 4√6 सेमी2

∴ योग्य उत्तर 4√6 सेमी2 आहे.

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