alleryगोलार्ध घुमटाची त्रिज्या 7 cm असते. त्याच्या वक्र आवरणाला किती साहित्य लागते? π = 22/7 वापरा.
A308 cm²
B154 cm²
C462 cm²
D616 cm²
Answer & Solution
Correct answer: A. 308 cm²
गोलार्धाचे वक्र क्षेत्र 2πr² = 2 × (22/7) × 49 = 308 सेमी ² आहे.
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