3.) A paved walkways around a garden has an outer diameter of 80 ft. and an inner diameter of 40 ft. A diagram is shown. What is the
approximate area of the paved walkway?
A) 1,230 ft squared
B) 3,770 ft squared
C) 5,030 ft squared
D) 6,280 ft squared

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.

Awindow washer cleans 42 windows in 2 hours. at this rate, how many windows did he clean in 180 minutes.

If 5x - 2 = -12, then x = a) -50 b) -4.4 c) -2.8 d) -2