The quilter will use small congruent fabric squares to cover each region without any gaps or overlaps. Based on the information, which statement is true?

4. find the geometric mean of 4 and 12. 24 8

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.

What is the area of the trapezoid shown ?