A) 55 m
B) 30 m
C) 28 m
D) 56 m
Correct Answer: D
Solution :
If the radius be r m, then \[\pi r+2r=144\] \[\Rightarrow \] \[r(\pi +2)=144\] \[\Rightarrow \] \[r=\frac{144}{\pi +2}=\frac{144}{\frac{22}{7}+2}=\frac{144\times 7}{36}=28\] \[\therefore \] Diameter \[=2r=2\times 28=56\,m\]You need to login to perform this action.
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