1. Find the approximate volume of a sphere with a diameter of 12cm 2. Find the approximate volume of a cone with a diameter of 14cm and a height of 9 cm

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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Find the value of ax 4 ; a = 2, x = 1. select one: a. 2 b. 4 c. 1 d. 8