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Find the mass of the solid bounded below by the circular paraboloid z=x2+y2 and above by the circular paraboloid z=9.75−x2−y2 if the density ρ(x,y,z)=x2+y2​. Round your answer to four decimal places. Mass =π Question Help: Question 2 [ 0/1 pt (i) Details Find the center of mass of the solid E bounded by the planes x=0,x=1,y=0,y=3,z=0 and z=3. Assume the density is ρ(x,y,z)=z. Question 3 E 0/1 pt (i) Details Electric charge is distributed over the triangular region D shown below so that the charge density at (x,y) is σ(x,y)=5xy, measured in coulumbs per square meter (C/m2). Find the total charge on D. Round your answer to four decimal places. coulumbs