A) \[36\,\pi \]
B) \[64\,\pi \]
C) \[144\,\pi \]
D) \[256\,\pi \]
Correct Answer: A
Solution :
[a] From diagram, Length of diameter AB = 8 + 4 = 12 \[\therefore \]Radius of circle of diameter \[AB=\frac{12}{2}=6\] \[\therefore \]Area of circle of diameter \[AB=\pi {{r}^{2}}=\pi \,{{(6)}^{2}}=36\pi \,c{{m}^{2}}\] |
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