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A circle of radius 5 units touches both ...

A circle of radius 5 units touches both the axes and lies in the first quadrant. If the circle makes one complete roll on x-axis along the positive direction of x-axis, then its equation in new position is:

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The correct Answer is:
`x^(2)+y^(2)-10(1+2pi)x-10y+100pi^(2)+100pi+25=0`
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