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3 April, 01:06

This circle is centered at the origin and the length of its radius is 4. what is the equation of the circle

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  1. 3 April, 04:06
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    It's Radius is 4, that's key (: Knowing the radius is 4 telling you distance from origin.

    The equation for a Circle is x^2+y^2.

    The farthest it's ever getting from the origin is 4, the closest it's getting to the origin is 4.

    Therefore it equals 4 (:

    x^2+y^2=4 is the base equation.
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