calculs 3

Note: please write down the Answer by hand on paper and also write each answer with the number of the questions

16. [-/2 Points] DETAILS SCALCET9 15.7.009. Write the equations in cylindrical coordinates. (a) 8x2 - 3x + 8y2+ 22 =9 (b) z = 3x2 - 32 17. [-/1 Points] DETAILS SCALCET9 15.7.019. Use cylindrical coordinates. Evaluate x2 + y2 dV, where E is the region that lies inside the cylinder x2+ y?= 25 and between the planes z = -1 and z = 2