Please help me with these questions with explanations!

3. Electric charge is distributed over the triangular panel shown, and the charge density at any point is given by o(x, y) = vy +5 Coulombs per cm?. Find the total charge Q on the panel. (0, 1) (2, 1) (0, 0)4. Consider the solid E bounded by the parabolic cylinder r = y' and the planes = = =r, 2 =0 and r = 4, as shown: Set up (but don't compute) the following triple integrals for a function f over E. If this can not be done using a single set of triple integrals, state NOT POSSIBLE. a) SSS f(z, y. 2) dadydr = b) SSS f(x,y, 2) dy dr dz = E c) SSS f(x, y, 2) dx dady = E