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`C_1` is a circle of radius 1 touching the x- and the y-axis. `C_2` is another circle of radius greater than 1 and touching the axes as well as the circle `C_1` . Then the radius of `C_2` is (a)`3-2sqrt(2)` (b) `3+2sqrt(2)` `3+2sqrt(3)` (d) none of these

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