1. The problem statement, all variables and given/known data A quadrant contains an inscribed rectangle ABCD. Given the distance marked: CD=3m , what is length of AD? [Broken] 2. Relevant equations Area of circle = pi*r^2 Pythagorean 's theorem : a^2=b^2+c^2 3. The attempt at a solution We can draw diagonal from C to B similar to that from A to D. And that diagonal is equal to radius which is 10. Correct?