The base of a three-dimensional figure is bound by the circle x² + y² = 9. Vertical cross sections that are perpendicular to the y-axis are isosceles triangles with height equal to 3. Algebraically, find the area of each triangle. 54- O A(Y) = O A(y) = 3 V 9 O A(Y) = 2 19-y² O A(y) = √√√9-y²

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