Find the volume of the solid generated by revolving the region bounded by the graphs of the equations about the $x$-axis.
$y = 2 \sin x + 1 , x = 0 , y = 0 , x = \pi$
A) $\pi ^ { 2 } + 8 \pi$
B) $\pi ^ { 2 } + 4 \pi$
C) $3 \pi ^ { 2 } + 4 \pi$
D) $3 \pi ^ { 2 } + 8 \pi$

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The Answer of Find the volume of the solid generated by revolving the region bounded by the graphs of the equations about the $x$-axis.
$y = 2 \sin x + 1 , x = 0 , y = 0 , x = \pi$
A) $\pi ^ { 2 } + 8 \pi$
B) $\pi ^ { 2 } + 4 \pi$
C) $3 \pi ^ { 2 } + 4 \pi$
D) $3 \pi ^ { 2 } + 8 \pi$

Find the Volume of the Solid Generated by Revolving the Region