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15 November, 03:48

What is the radius of the circle whose equation is x2 + y2 = 9?

81

3

9

+5
Answers (1)
  1. 15 November, 04:07
    0
    3

    Step-by-step explanation:

    x^2 + y^2 = 9

    The equation of a circle is

    (x-h) ^2 + (y-k) ^2 = r^2

    (h, k) is the center and r is the radius

    x^2 + y^2 = 3^2

    The radius is 3
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