Answer
Center: $(\frac{1}{2},\frac{1}{2})$; Radius: $r=\frac{3}{2}$
Work Step by Step
Equation of a circle:
$(x-h)^2+(y-k)^2=r^2~~ $ (standard form)
Center: $(h,k)$; Radius: $r$
$(x-\frac{1}{2})^2+(y-\frac{1}{2})^2=\frac{9}{4}$
$(x-\frac{1}{2})^2+(y-\frac{1}{2})^2=(\frac{3}{2})^2$
$h=\frac{1}{2}$, $k=\frac{1}{2}$, $r=\frac{3}{2}$