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The area of the circle x^(2)+y^(2)-2 x+...

The area of the circle `x^(2)+y^(2)-2 x+4 y-4=0` is

A

6 pi sq. units

B

9 pi` sq. units

C

7 pi` sq, units

D

16 pi sq. units

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The correct Answer is:
B
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