virtus
Find the volume of the solid formed when the area bound by the curve y=4x^2 and the x axis is rotated one complete revolution about the y axis



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virtus
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somebody please help?

phi
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dw:1342091941464:dw

phi
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or use method of disks (stack of "disks") each of area \( \pi r^2 \) and thickness dy
dw:1342092231783:dw

virtus
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thanks ;D