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27 February, 11:39

Write the standard equation of a circle with center (2, 1) and radius 8. The standard equation of the circle is ...

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  1. 27 February, 11:57
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    In the Cartesian plane, the general standard equation for a circle with center (p, q) and radius r is

    (x-p) ² + (y-q) ² = r²

    Here we have (p, q) = (2,1) and r=8 so our equation is

    (x-2) ² + (y-1) ² = 8²

    I guess we evaluate the 8².

    Answer: (x-2) ² + (y-1) ² = 64
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