A) \[\text{4 }\pi \text{ }{{\text{r}}^{\text{2}}}\]
B) \[\text{6 }\pi \text{ }{{\text{r}}^{\text{2}}}\]
C) \[\text{8}\pi {{\text{r}}^{\text{2}}}\]
D) \[\text{12 }\pi \text{ }{{\text{r}}^{\text{2}}}\]
Correct Answer: C
Solution :
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