Hello, I would like some help with these questions. Thank you for the time.

1) Circle D intersects the center of circle E, and circle E intersects the
center of circle D. The radius of each circle is 6 cm. The area of the
shaded region where the circles overlap can be expressed in simplest
radical form as aπ + b√c cm2. What is the value of a + b + c?

2) The figure shows a circle inscribed in a square that is inscribed in a circle. If
the larger circle has area 256π mm2, what is the radius of the smaller, shaded
circle? Express your answer in simplest radical form.

3) A circle of radius 17 units has its center in the second quadrant. The circle intersects the y-axis at (0, 0) and (0, 17 2). What is the area of the region of the circle that lies in the third quadrant? Express your answer as a decimal to the nearest tenth.