AIR MATH

Math Question

Question 5 of 10 Which is the standard equation for a circle centered at the origin with radius r? A. \( x^{2}+y^{2}=r^{2} \) B. \( x^{2}=y^{2}+r^{2} \) C. \( x+y=r \) D. \( x^{2}+y^{2}=r \)

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