అధిక త్రిభుజం యొక్క పొడవైన భుజం 7 సెం.మీ మరియు త్రిభుజం యొక్క ఇతర రెండు భుజాలు 4 సెం.మీ మరియు 5 సెం.మీ. త్రిభుజం యొక్క వైశాల్యాన్ని కనుగొనండి?

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SSC MTS (2022) Official Paper (Held On: 18 May, 2023 Shift 1)
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  1.  సెం.మీ2
  2.  సెం.మీ2
  3.  సెం.మీ2
  4.  సెం.మీ2

Answer (Detailed Solution Below)

Option 4 :  సెం.మీ2
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SSC MTS 2024 Official Paper (Held On: 01 Oct, 2024 Shift 1)
90 Qs. 150 Marks 90 Mins

Detailed Solution

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ఇచ్చినది:

మొదటి భుజం (a) = 4 సెం.మీ

రెండవ భుజం (b) = 5 సెం.మీ

మూడవ భుజం (c) = 7 సెం.మీ

ఉపయోగించిన సూత్రం:

హెరాన్ సూత్రం

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

ఇక్కడ, S = (a + b + c)/2

గణన:

S = (4 + 5 + 7)/2 = 16/2 = 8

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

⇒ √{8 × (8 - 4) × (8 - 5) × (8 - 7)}

⇒ √{8 × 4 × 3 × 1}

⇒ √{16 × 6}

⇒ √96 = 4√6 సెం.మీ2

∴ సరైన సమాధానం 4√6 సెం.మీ2

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