2.1 सेमी त्रिज्या वाले एक अर्द्धगोले के आयतन का एक-तिहाई ज्ञात कीजिए।  

  1. 19.404 घन सेमी
  2. 21.468 घन सेमी
  3. 5.689 घन सेमी
  4. 6.468 घन सेमी

Answer (Detailed Solution Below)

Option 4 : 6.468 घन सेमी
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Detailed Solution

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दिया गया है कि:

अर्द्धगोले की त्रिज्या = 2.1 सेमी

सूत्र:

अर्द्धगोले का आयतन = (2/3)πr3

गणना:

अर्द्धगोले का आयतन = (2/3)πr3

⇒ (2/3) × (22/7) × 2.1 × 2.1 × 2.1

⇒ (2/3) × (22/7) × 9.261

⇒ 19.404 घन सेमी

अर्द्धगोले के आयतन का एक-तिहाई = 19.404 × (1/3) = 6.468 घन सेमी

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