A) \[4746\,{{m}^{2}}\]
B) \[4748\,{{m}^{2}}\]
C) \[4950\,{{m}^{2}}\]
D) \[5049\,{{m}^{2}}\]
Correct Answer: A
Solution :
Radius of each of semi-circle \[=\frac{42}{2}=21\,m\] The required area = 2\[\times \]area of semi-circle EFA + area of rectangle ABDE \[=2\times \frac{1}{2}\pi {{(21)}^{2}}+80\times 42\] \[=\frac{22}{7}\times 21\times 21+80\times 42=4746\,{{m}^{2}}.\]You need to login to perform this action.
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