A) 444 m
B) 70 m
C) 132 m
D) 19 m
Correct Answer: C
Solution :
\[\pi {{r}^{2}}=1386\]. \[\Rightarrow \,\] \[\frac{22}{7}\times {{r}^{2}}=1386\] \[\Rightarrow \,\] \[{{r}^{2}}=\frac{1386\times 7}{22}=63\times 7\] \[\Rightarrow \,\] \[{{r}^{2}}=\sqrt{7\times 3\times 3\times 7}=21\,\,m\] \[\therefore \] Circumference\[=2\times \frac{22}{7}\times 21=132m\]You need to login to perform this action.
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