alleryఅర్ధగోళ గోపురం వ్యాసార్థం 7 cm. దాని వక్ర కవరింగ్కు ఎంత పదార్థం అవసరం? π = 22/7 ఉపయోగించండి.
A308 cm²
B154 cm²
C462 cm²
D616 cm²
Answer & Solution
Correct answer: A. 308 cm²
ఒక అర్ధగోళం వక్ర ప్రాంతాన్ని కలిగి ఉంటుంది:
2πr² = 2 × (22/7) × 49 = 308 cm²
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