Question

Give the center and a point on the circle:

Center (10, 9) and Point on Circle (4, 7)

What is the radius2

Answer 1

Explanation:

`(x-h)^2+(y-k)^2=r^2\\ \\ (x-10)^2+(y-9)^2=r^2\\ \\ (4-10)^2+(7-9)^2=r^2\\ \\ 36+4=r^2\\ \\ r^2=40`