A) \[78.5\,c{{m}^{2}}\]
B) \[30.5\,c{{m}^{2}}\]
C) \[42.8\,c{{m}^{2}}\]
D) \[47\,c{{m}^{2}}\]
Correct Answer: B
Solution :
Diameter of circle \[=\sqrt{{{(8)}^{2}}+{{(6)}^{2}}}=\sqrt{100}\] \[=1\,0\,cm\] Required area = Area of circle \[-\] Area of rectangle \[=\,\,\frac{22}{7}{{(5)}^{2}}-(6\times 8)\] \[=\,\,\frac{25\times 22}{7}-48\] \[=\,\,\frac{214}{7}=30.5\,c{{m}^{2}}\]
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