alleryଏକ ଗୋଲାର୍ଦ୍ଧ ଗୋବରର ବ୍ୟାସାର୍ଦ୍ଧ 7 cm | ଏହାର ବକ୍ର ଆବରଣ କେତେ ପଦାର୍ଥ ଆବଶ୍ୟକ କରେ? π = 22/7 ବ୍ୟବହାର କରନ୍ତୁ |
A308 cm²
B154 cm²
C462 cm²
D616 cm²
Answer & Solution
Correct answer: A. 308 cm²
ଏକ ଗୋଲାର୍ଦ୍ଧର ବକ୍ର କ୍ଷେତ୍ର ହେଉଛି 2πr² = 2 × (22/7) × 49 = 308 ସେମି ² |
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