find the volume of the solid of revolution generated by revolving about the y-axis the region bounded by the curve , the x-axis and the line x = 4; Just checking out if its: ?
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Originally Posted by ^_^Engineer_Adam^_^ find the volume of the solid of revolution generated by revolving about the y-axis the region bounded by the curve , the x-axis and the line x = 4; Just checking out if its: ? why do you have ? it is the out radius, which is 4. minus the inner radius which is your formula should be: (remember, the should be applied to both radii) ...you know, I never noticed you were from the Philippines until now...
Last edited by Jhevon; September 22nd 2007 at 08:25 PM. Reason: forgot to square the inner radius: thanks ticbol
Originally Posted by ^_^Engineer_Adam^_^ find the volume of the solid of revolution generated by revolving about the y-axis the region bounded by the curve , the x-axis and the line x = 4; Just checking out if its: ? outer radius = 4 inner radius = x dV = pi[4^2 -x^2]dy y = sqrt(x) y^2 = x so, x^2 = y^4 Therefore, dV = pi[4^2 -y^4]dy
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