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?
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 with radius is given by:
3. ### Analysis and Detail
Given that the radius , we can substitute this value into the standard circle equation.
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First, calculate :
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Now, substitute into the circle's equation:
4. ### Verify and Summarize
We established the basic formula for a circle with given radius and confirmed our calculations for were accurate.
Final Answer
The equation of the circle is:
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