Question 410443
One of the points on the circle is (3,4), which means that the segment determined by the points (0,0) and (3,4) is a radius of the circle. Using the distance formula,


{{{r = sqrt((3-0)^2 + (4-0)^2) = 5}}}, so the circumference of the circle is {{{2*pi*r}}} = {{{2*pi*5}}} = {{{10*pi}}}.