The number of hours Abe practices golf each week, g, is 2 more than the number of hours he runs, r. Which equation represents the number of
hours he runs each week?

70). Answer Letter Choice, (C), 18 pi square units.

Area = pi r^2

D = 12

R = 6

Larger Circle: 36 pi

Find smaller circles, Subtract:

Diameter of larger circle is 12

Radius 6, also diameter of small circles (2)

pi r^2

D = 6

R = 3

pi = 9

2 circles

2 * 9 pi = Letter Choice, (C), 18 pi square inches

71). Answer Letter Choice, (B), 30.79 cm^2

72). 144

Hope that helps : )