If the radius of a sphere is 7 cm then what is its surface area?
गोले की त्रिज्या 7 cm है तो उसका पृष्ठीय क्षेत्रफल क्या होगा?
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Correct Answer
B. 616 cm² / 616 cm²
ExplanationSurface area = 4πr² = 4 × 22/7 × 7² = 616 cm².
पृष्ठीय क्षेत्रफल = 4πr² = 4 × 22/7 × 7² = 616 cm²।