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This circle is centered at the origin, and the length of its radius is 6. What is the circle's equation?

Question

This circle is centered at the origin, and the length of its radius is 6. What is the circle's equation?

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Solution

1. ### Break Down the Problem

To find the equation of a circle centered at the origin with a given radius, we need to use the standard equation of a circle. The center of the circle and how the radius relates to the coordinates will help us derive the equation.

2. ### Relevant Concepts

The standard form of the equation of a circle centered at the origin (0,0)(0, 0) with radius rr is given by: x2+y2=r2 x^2 + y^2 = r^2

3. ### Analysis and Detail

Given that the radius r=6r = 6, we can substitute this value into the standard circle equation.

  1. First, calculate r2r^2: r2=62=36 r^2 = 6^2 = 36

  2. Now, substitute r2r^2 into the circle's equation: x2+y2=36 x^2 + y^2 = 36

4. ### Verify and Summarize

We established the basic formula for a circle with given radius and confirmed our calculations for r2r^2 were accurate.

Final Answer

The equation of the circle is: x2+y2=36 x^2 + y^2 = 36

This problem has been solved

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