Question

What is the standard equation of a circle at the origin?

Answer 1

x2 – y2 = r2

x2 + y2 = r2

x2 + y2 = r

x2 – y2 = r

Answer 2

x^2+y^2=r^2

Answer 3

so b @cutepochacco

Answer 4

General Formula: X 2 + Y 2=r2 where r is the radius

Answer 5

yes b. is correct