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Find the equation of the circle with cen...

Find the equation of the circle with centre : (1, 1) and radius `sqrt(2)`

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`(##_XI_11_E01_04_##)`
Here it is given that center `(h.k)=(1,1)` and radius `r=sqrt2`
`:.` the equation of the circle is `(x-1)^2+(y-1)^2=(sqrt2)^2`
=>`x^2-2x+1+y^2-2y+1=2`
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