(b) A cake is shaped like a hemisphere of radius 4 with base on the ry-plane. A wedge of cake is removed by making two cuts from the center of the cake outward, perpendicular to the xy- plane and separated by an angle of . (b2) Now suppose that the cake is shaped like a cylinder with the same radius and you take a slice in the same way with the same angle. How high the cake should be so that you get the same amount of cake as in part (bl)?

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