Question 87749
The radius of this circle is the distance from the centre to the point on the circumfrence.  By inspection, this distance is 3 units.  Would you also like the equation of the circle??


Equation of a circle: {{{ (x-h)^2 +(y-k)^2 = r^2 }}}

Equation of your circle: {{{ (x-1)^2 +(y-1)^2 = 3^2 }}} 

Equation of your circle: {{{ (x-1)^2 +(y-1)^2 = 9 }}}  No extra charge!!


R^2  Retired from SCC