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I’m looking to answer question 12. and 14. Which are to use the Information provided to write the equation of each circle.

I’m looking to answer question 12. and 14. Which are to use the Information provided-example-1

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Explanation

We are given the following information:


\begin{gathered} Center(a,b)\to(0,13) \\ Area=25\pi \end{gathered}

We are required to determine the equation of the circle with the information above.

The standard equation of a circle is of the form:


\begin{gathered} (x-a)^2+(y-b)^2=r^2 \\ where \\ (a,b)\to(0,13) \end{gathered}

Next is to determine the value of the radius as follows:


\begin{gathered} Area=25\pi \\ Area=\pi r^2 \\ 25\pi=\pi r^2 \\ r^2=25\Rightarrow r=5 \end{gathered}

Therefore, the equation of the circle is:


\begin{gathered} (x-a)^2+(y-b)^2=r^2 \\ (x-0)^2+(y-13)^2=25 \end{gathered}

Hence, the equation of the circle is:


(x-0)^2+(y-13)^2=25

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