Hello, decoy808!
I believe there is a typo . . .
Use the Distance Formula to show that: .Use coordinate geometry to show that a circle, with its centre at O(2,1)
can be drawn through the points A(5,5), B(6,-2), and C(-2,-2)
What is the area of the circle?
. . That is, the center is equidistant from the three points.
That distance is the radius of the circle.
. . Now you can find the area of the circle, right?
posted by decoy808
It is much easier to plot the points on coordinate paper.You see that B and C are points on different radii.You erect the slope diagram for the corrected C and find a 3,4 5 right triangle so the radius is 5
bjh