Find the volume of the solid formed by the revolution of the curve x \equal{} a(1 \plus{} \cos \theta )\cos \theta ,\ y \equal{} a(1 \plus{} \cos \theta)\sin \theta\ (a > 0,\ \minus{} \pi < \theta \leq \pi) about the x axis. calculusintegrationtrigonometrycalculus computations