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Length of the radius of the circle x^2 +...

Length of the radius of the circle `x^2 + y^2- 4x + 2y=20 `is

A

a)5 unit

B

b)`sqrt5` unit

C

c)25 unit

D

d)20 unit

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UNITED BOOK HOUSE-MODEL QUESTION PAPERS-SET 9-EXERCISE
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