10 D. Which of the following best approximates the original price, in dollars, of the Glenview Street property? O B D E The diagram shows a circle with centre A and

radius r. Diameters CAD and BAE are perpendicular to each other. A larger circle has centre B and passes through C and a. Show that the radius of the larger circle is r². (2 Marks) b. Find the area of the shaded region in terms of r. (2 Marks)