WOW thankyou very much, in my qn i had been given the formula for the triple intergral of V and it equaled 4/3 then was asked to convert to cylindrical, and I had V={r:0<=rho<=1,0<=theta<=pi,0<=z<=2rho&sin(theta)}

therefore volume of V=triple intergral of (0 to pi, 0 to 1, 0 to 2rho*sin(theta))(1*rho) dz drho dtheta=4/3

can you confirm that this is the correct way to do it? once again, very much appreciated

sketch the following region in R3

V={r:y>=0,0<=x^2+y^2<=1,0<=z<=2y}

ok i have that xy plane is a quarter circle, on the zy plane is the line z=2y.. im trying to picture but i just cant, im thinking its like a quarter cone, but the apex is not at (0,0,0) please can anyone try and draw it for me?

please anyone have any ideas?

in maple 11, if that is needed, Thanks.