A) \[\text{145}0\,{{\text{m}}^{\text{2}}}\]
B) \[\text{1576 }{{\text{m}}^{\text{2}}}\]
C) \[\text{1694 }{{\text{m}}^{\text{2}}}\]
D) \[\text{3368 }{{\text{m}}^{\text{2}}}\]
Correct Answer: C
Solution :
| [c] Radius of outer concentric circle |
| \[=(35+7)\,m=42\,m.\] |
| Area of path \[=\pi \,({{42}^{2}}-{{35}^{2}}){{m}^{2}}\] |
| \[=\frac{22}{7}({{42}^{2}}-{{35}^{2}}){{m}^{2}}=1694\,{{m}^{2}}\] |
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