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**1. Homework Statement**

Find the volume of the object, defined by these inequalities(?): x^2+y^2+z^2≤4, (x-1)^2+y^2≥1, (x+1)^2+y^2≥1

**2. Homework Equations**

**3. The Attempt at a Solution**

First we draw the object, and realize that it's a sphere with 2 circles in it with radius 1 at (-1,0) and (1,0). Our object is defined outside these circles, so I imagine we could consider the square with 2 cylinders drilled out. If we can find the volume of one of these cylinders from 0 to z we are done. (V

_{sphere}-4*V

_{cylinder)}

Is this the way to go or do we have other solutions? This one doesnt give me right answer...