Find the area of the region in the complex plane defined by ∣z−1∣le1|z-1| \\le 1∣z−1∣le1 and textRe(z)ge1\\text{Re}(z) \\ge 1textRe(z)ge1.
pi/2\\pi/2pi/2
pi/4\\pi/4pi/4
111
pi\\pipi