If r=4 units and x = 8 units then what is the volume of the cylinder shown above use 3.14 for tt and round your answer to the nearest hundredth

To answer this you will use the formula V = pi x radius ^2 x height.  The substitution for this would be 3.14 x 4^2 x 8.  The approximate answer is 401.92 cubic units. 3.14 is an approximation of pi. 
 
Note:  It does not say that x is the height, but this is the only piece of information missing without an obvious label, so I am using it as the height.