What is the volume of a region in R3 bounded by a hyperboloid and two planes?

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SUMMARY

The volume of the region in R3 bounded by the hyperboloid defined by the equation x² + y² - z² = 1 and the planes z = 1 and z = -1 is infinite. This is due to the nature of the hyperboloid, which creates an unbounded set when intersected with planes of the form z = constant. To calculate the volume, one must integrate the function S = π(1 + z²) from z = -1 to z = 1, resulting in the integral π∫(1 + z²)dz from -1 to 1.

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Can some one help me with the following problem? Find the volume of the region contained in R3 bounded by the hyperboloid x^2+y^2-z^2=1 and the planes z=1 and z= -1. Thank you.
 
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That volume is infinite. You have a paraboloid of one sheet that has axis of symmetry along the z-axis. Cutting the paraboloid by any plane of the form z= constant gives an unbounded set.
 
integrate S*dz from -1 to 1.S=pi*(r^2)=pi*(x^2+y^2)=pi*(1+z^2)

that is integrate pi*(1+z^2)dz from -1 to 1.
 

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