A) 4 units
B) \[\pi \]units
C) 8 units
D) 2 units
Correct Answer: C
Solution :
| [c] \[\pi {{r}^{2}}=2\pi r\times 2\] |
| \[\Rightarrow \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,r=4\,\,\,\,\,\,\,\,\Rightarrow 2r=8\] |
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