The base of a three-dimensional figure is bound by the semi-circle y = √4x². Vertical cross sections that are perpendicular to the x-axis are rectangles with the height equal to twice the width. Algebraically, find the area of each rectangle. 543-2-1 1 2 3 4 5 O A(x) = 2(4-x²) ○ A(x) = 1/2 (4-x²) ○ A(x) = (4-x²) O A(x) = (4x²)

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