A wire fence is to be put up all around a circular ground with diameter $105\,m$. The length of the fence is $\ldots \ldots \ldots \ldots m$.
A wire fence is to be put up all around a circular ground with diameter $105\,m$. The length of the fence is $\ldots \ldots \ldots \ldots m$.
- A
$165$
- B
$210$
- C
$660$
- D
$330$
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