b) Approximate [₁₂²² + y²dA where D is region inside the upper unit semi-circle centered at the origin (inside the circle, above the x-axis). I want you to approximate this using a polar Riemann sum, dividing 0 into 6 subdivisions, and dividing r into 3 subdivisions (so there will be a total of 18 pieces). Use the point with minimum and maximum r in each subdivision piece as the point you put into the function.

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