This circle is centered at the origin, and the length of its radius is 6. what is
the circle's equation?
a. x2 + y2 = 36
b. x2 + y2 = 6
c. x+y= 36
d. x + y = 1

A. x^2 + y^2 = 36

Step-by-step explanation:

The equation of a circle is usually written in the form

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

Where (h,k) is the center and r is the radius

The center is at the origin so (h,k) = (0,0) and  the radius is 6 so r=6

x^2 + y^2 = 6^2

or x^2 +y^2 = 36

don't know sorry bru

step-by-step explanation:

%40

step-by-step explanation: