A thin piece of wire 40 meters long is cut into two pieces. One piece is used to form a circle with radius r, and the other is used to form a square. No wire is left over. Which of the following represents the total area, in square meters, of the circular and the square regions in terms of r?
(A) πr2
(B) πr2+10
(C) πr2+14π2r2
(D) πr2+(40−2πr)2
(E) πr2+(10−12πr)2