Which phrase describes the volume of a -dimensional figure? A
the number of square units it takes to fill a solid figure
B
the number of cubic units it takes to fill a solid figure
C
the number of square units it takes to cover the outside of a solid figure
D
the number of cubic units it takes to cover the outside of a solid figure

Determine whether the following statements are true and give an explanation or counterexample. bold a. when using the shell method, the axis of the cylindrical shells is parallel to the axis of revolution. bold b. if a region is revolved about the y-axis, then the shell method must be used. bold c. if a region is revolved about the x-axis, then in principle it is possible to use the disk/washer method and integrate with respect to x or the shell method and integrate with respect to y.

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Point r divides in the ratio 1 : 3. if the x-coordinate of r is -1 and the x-coordinate of p is -3, what is the x-coordinate of q? a. b. 3 c. 5 d. 6 e. -9