A) 28 m
B) 56 m
C) 84 m
D) 112 m
Correct Answer: B
Solution :
Suppose, the radius of the field is r metre, then \[\pi r+2r=144\] \[\Rightarrow \] \[(\pi +2)r=144\] \[\Rightarrow \]\[r=\frac{144}{\pi +2}=\frac{144}{\frac{22}{7}+2}=\frac{144\times 7}{36}=28\,\,\text{m}\] So, diameter \[=2r=2\times 28=56\,\,\text{m}\]You need to login to perform this action.
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