The coordinates of point P are the legs of the right triangle of hypotenuse
5:
So x^2 + y^2 = 5^2 . Furthermore, y = 2x, so
44 . B
The radius of circle O is 4, so the area of circle O is π(4)^2 = 16π. The radius
of circle P is 2, so the area of circle P is π(2)^2 = 4π. Think of the shaded
region as the difference between a quarter of circle O and a half of circle