B and E I beleive is the answer
First, you should solve for
, which equals
. Now, solve the integral of
=
, to get that
. You can check this by taking the integral of what you got. Now by the Fundamental Theorem
.
This should be the answer to your question, if I understood what you were asking correctly.
The answer would be 31, because the area of the square would be 144 (12 x 12= 144; A=S^2). You would then find the area of the circle (6^2 x pi = 113; A=pi x r^2). You then take the area of the square and subtract it with the area of the circle (144-113=31)
< cause millimeters is smaller than meters in the metric system