Evaluate √√x² + y2 dA, where D is the domain in the figure and a = 26. 26 12/6 1/₁₂ √ x² + y² α ^ = dA D Incorrect 4720 (Give your answer in exact form. Use symbolic notation and fractions where needed.) Hint: Find the equation of the inner circle in polar coordinates and treat the right and left parts of the region separately. a X 1352π 3

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A: Exponential form ⇒z=reiθPolar form z=rcosθ+isinθThen reiθ=rcosθ+isinθ⇒eiθ=cosθ+isinθ