Three boxes are stacked one on top of the other. one box is 5 feet 10 inches tall , one is 4 feet 2 inches tall and one is 2 feet 3 inches tall. how high is the stack ? ft: in :

In simplified exponential notation, the expression a^2•a^-3•a 1/a 0

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.

Which one is true about the hexagons ?