Eleven million seven hundred sixty thousand eight hundred twenty five
I'd personally go with A and C, The rest don't make too much sense. Don't count on my answer just yet though.
Use the Pythagorean theorem:
Answer: C. 7.5
Pretend to (or actually) cut out the given image, stick a pin in point P so it cannot move, and rotate the cutout up and to the left around point P about 1/8 of the way around the circle. The result of doing that is the picture you're looking for.