Well, the data you gave us is confusing, so i'm just going to say that it is the lowest percentage possible 39.1%, because by the choices given, it shouldn't be lower than that
In order to answer the question, you need to know the area of a circle. Area = pi * r^2 Area = 3.14 * (100/2) ^ 2 Area = 3.14 * 50^2 Area = 7850 mils^2 = 0.00785 in^2