Question: 12. Evaluate the double integral ersin(ry) dA over R = [0, x] x [1, 2]. 13. Find the volume of the solid below the elliptic

![x] x [1, 2]. 13. Find the volume of the solid below](https://s3.amazonaws.com/si.experts.images/answers/2024/06/6661c20a2c797_6986661c20a14543.jpg)
12. Evaluate the double integral ersin(ry) dA over R = [0, x] x [1, 2]. 13. Find the volume of the solid below the elliptic paraboloid z = 81-x2-4y' and above the rectangle [0, 2] x [0, 2]
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