Question

What is the standard equation of a circle?

a) (x+h)^2+(y+k)^2=r

b) (x-h)^2+(y-k)^2=r

c) (x-h)^2+(y-k)^2=r^2

d) (x+h)^2+(y+k)=r^2

Answer 1

https://www.mathsisfun.com/algebra/circle-equations.html

Answer 2

Thanks!