ഒരു ഗോളത്തിന്റെ ആരം ഇരട്ടി ആക്കിയാൽ ഉപരിതല വിസ്തീർണ്ണം എത്ര വർദ്ധിക്കും?
A50%
B300%
C200%
D400%
A50%
B300%
C200%
D400%
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