A) \[8070\,{{m}^{2}}\]
B) \[8270\,{{m}^{2}}\]
C) \[8370\,{{m}^{2}}\]
D) \[8470\,{{m}^{2}}\]
Correct Answer: D
Solution :
\[2\pi r=1188\] \[r=\frac{1188}{22\times 2}\times 7=189\,m\] So outer radius \[R=189+7=196\,m\] So area of road\[=\pi ({{R}^{2}}-{{r}^{2}})\] Put R = 196 m and r = 189 m and proceed.
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