A hemispherical bowl has a radius of 3.5 cm, then its curved surface area is
A hemispherical bowl has a radius of 3.5 cm, then its curved surface area is
A) 77 cm2
B) \(\frac{231}{2 }\)cm2
C) \(\frac{539}{6 }\)cm2
D) \(\frac{77}{2 }\)cm2
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