Let me tell you first that this question has a vague nature, because we can't get the exact value yet.

First, connect the points with coordinate axes, thus forming a triangle. You first spherical the area of this triangle, and then make a circle with the length of a point on the X axis where the origin intersects the quadratic function as the radius, so that you can find the area of the circle. Of the four answers, the number between these two areas is three sixteenth.