r = 11, d = 22 (option F)
Step-by-step explanation:
Circumference of a circle = 2πr
Circumference of a circle = 69.1 inches
π = 3.14
r = radius
69.1 = 2 × 3.14 × r
69.1 = 6.28r
r = 69.1/6.28
r = 11.0032
Approximately to the nearest whole number, r is 11
diameter = 2r = 2(11) = 22
r = 11, d = 22 (option F)