The circle is centered at the origin and the length of its radius is three. What is the circles equation

x^2 + y^2 = 3^2

Step-by-step explanation:

Use the standard equation of a circle with center at (h, k) and radius r:

(x - 0)^2 + (y - k)^2 = 3^2, or

x^2 + y^2 = 3^2

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y/x=18

step-by-step explanation: