Question
Download Solution PDFउस गोले का पुष्ट क्षेत्रफल ज्ञात कीजिए (सेमी² में) जिसकी त्रिज्या 126 सेमी है और π = 22/7 है।
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFदिया गया है:
त्रिज्या (r) = 126 सेमी और π = 22/7
प्रयुक्त सूत्र:
गोले का पृष्ठीय क्षेत्रफल = 4πr2
गणनाएँ:
पृष्ठीय क्षेत्रफल = 4 × π × r2
⇒ पृष्ठीय क्षेत्रफल = 4 × (22/7) × (126 × 126)
⇒ पृष्ठीय क्षेत्रफल = 4 × (22/7) × 15876
⇒ पृष्ठीय क्षेत्रफल = 4 × 499392/7
⇒ पृष्ठीय क्षेत्रफल = 1997568/7
⇒ पृष्ठीय क्षेत्रफल = 1997568/7 = 1997568/7 ≈ 1997568/7 सेमी2
∴ सही उत्तर विकल्प (2) है।
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