Work each problem. See Example 5. Irrigation Area Suppose that in Exercis...

Work each problem. See Example 5.

Irrigation Area Suppose that in Exercise 61 the angle is halved and the radius length is doubled. How does the new area compare to the original area? Does this result hold in general for any values of u and r?

(Reference Exercise 61)

Irrigation Area A center-pivot irrigation system provides water to a sector-shaped field as shown in the figure. Find the area of the field if u = 40.0 ° and r = 152 yd.