उस अर्धगोले का कुल पृष्ठीय क्षेत्रफल ज्ञात कीजिए जिसकी त्रिज्या 33 cm है और π = 3.14 है। (cm2 में)

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UP Police SI (दरोगा) Official PYP (Held On: 12 Nov 2021 Shift 2)
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  1. 10358.38
  2. 10258.38
  3. 10558.38
  4. 10458.38

Answer (Detailed Solution Below)

Option 2 : 10258.38
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यूपी पुलिस SI (दरोगा) सामान्य हिंदी मॉक टेस्ट
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Detailed Solution

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दिया गया है:

त्रिज्या (r) = 33 सेमी

प्रयुक्त सूत्र:

अर्धगोले का कुल पृष्ठीय क्षेत्रफल = 3πr2

गणना:

कुल पृष्ठीय क्षेत्रफल = 3 × 3.14 × 332

⇒ कुल पृष्ठीय क्षेत्रफल = 3 × 3.14 × 1089

⇒ कुल पृष्ठीय क्षेत्रफल = 10258.38 सेमी2

∴ सही उत्तर विकल्प 2 है।

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