allery7 cm त्रिज्या वाले एक गोले का पृष्ठीय क्षेत्रफल ज्ञात कीजिए (π = 22/7)।
A154 cm²
B308 cm²
C1437 cm²
D616 cm²
Answer & Solution
Correct answer: D. 616 cm²
पृष्ठीय क्षेत्रफल = 4πr² = 4 × (22/7) × 49 = 616 वर्ग सेंटीमीटर (cm²)।
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