Question about a Circle, help please?
In circle O, CD = 44, OM = 20, ON = 19, CD is perpendicular to OM, EF is perpendicular to ON , (The figure is not drawn to scale.) Show your work.
a. Find the radius. If your answer is not an integer, express it in radical form.
b. Find FN. If your answer is not an integer, express it in radical form.
c. Find EF. Express it as a decimal rounded to the nearest tenth.
Please explain how to do it for future reference. Thanks :)