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22 August, 01:31

What's is the radius for a circle whose equation is x2 + y2=16

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  1. 22 August, 01:47
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    4

    Step-by-step explanation:

    The equation of a circle is:

    (x - h) ² + (y - k) ² = r²

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

    x² + y² = 16 is a circle with center (0, 0) and radius 4.
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