Find the volume of the solid of revolution formed by rotating the region R about the x-axis. R is the region under the curve $y = \sqrt { 49 - x ^ { 2 } }$ from x = -7 to x = 7.
A) $343 \pi$
B) $\frac { 1,372 } { 3 } \pi$
C) $49 \pi$
D) $\frac { 196 } { 3 } \pi$

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The Answer of Find the volume of the solid of revolution formed by rotating the region R about the x-axis. R is the region under the curve $y = \sqrt { 49 - x ^ { 2 } }$ from x = -7 to x = 7.
A) $343 \pi$
B) $\frac { 1,372 } { 3 } \pi$
C) $49 \pi$
D) $\frac { 196 } { 3 } \pi$

Find the Volume of the Solid of Revolution Formed by Rotating