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Math·Geometry and Trigonometry·Circles

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In the $xy$-plane, circle $F$ is defined by the equation $(x+7{)}^2+(y+7{)}^2=36$. Circle $G$ has the same center as circle $F$, and the radius of circle $G$ is $2$ units greater than the radius of circle $F$. Circle $G$ is defined by the equation $(x+7{)}^2+(y+7{)}^2=p$, where $p$ is a constant. What is the value of $p$?

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