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Which of the following is the equation of a circle whose center is at the origin and whose radius is 4?

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dalendrk
The equation of a circle whose center is at the origin and whose radius r:

x² + y² = r²

r = 4

Answer: x² + y² = 4²
kaedalou

Answer:

The equation of a circle whose center is at the origin and whose radius r:

x² + y² = r²

r = 4

Answer: x² + y² = 4²

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