A) 56 m
B) 83 m
C) 77 m
D) 69 m
Correct Answer: C
Solution :
[c] Let r be the radius of circle. \[\therefore \] \[2\pi r=220\] \[\Rightarrow \] \[r=\frac{220\times 7}{2\times 22}=35\,m\] Area of circle \[=\pi \,{{r}^{2}}=\frac{22}{7}\times 35\times 35=3850{{m}^{2}}\] Area of rectangle \[=3850\,{{m}^{2}}\] \[\therefore \]Length of rectangle\[=\frac{3850}{50}=77\,m\] |
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