आधार त्रिज्या = r और ऊँचाई = h वाले बेलन का आयतन है:

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Bihar STET TGT (Maths) Official Paper-I (Held On: 04 Sept, 2023 Shift 1)
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  1. 2πrh
  2. πr2h
  3. 2πr(r + h)
  4. 1/3 πr2h

Answer (Detailed Solution Below)

Option 2 : πr2h
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Bihar STET Paper 1 Social Science Full Test 1
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गणना

एक बेलन का आयतन = πr2h

सही उत्तर πr2h है।

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