### Home > CCA2 > Chapter 9 > Lesson 9.2.2 > Problem9-67

9-67.

Graph $y = \sqrt { ( 4 - x ^ { 2 } ) }$. Imagine revolving this graph around the $x$-axis, faster and faster, so that it appears to form a sphere. Sketch the sphere and then find its volume. Note: The volume of a sphere is given by $V =\frac { 4 } { 3 }πr^3$.

$V=\frac{32\pi}{3}$ cubic units