Select the correct answer from each drop-down menu. The endpoints of the longest chord on a circle are (4, 5.5) and (4, 10.5). The center of the circle is at the point , and its radius is units. The equation of this circle in standard form is .

This activity will you meet these educational goals: mathematical practices-you will make sense of problems and solve them, reason abstractly and quantitatively, and usemathematics to model real-world situations.directionsread the instructions for this self-checked activity type in your response to each question, and check your answers. at theend of the activity, write a brief evaluation of your work.