Answer:
21 1/3
Step-by-step explanation:
20 ÷ 15/16=
20/1 ÷ 15/16=
20/1*16/15=
4/1*16/3=
64/3=
21 1/3
The sum of n terms of a geometric series is given by

Substituting the given numbers, you have

There are 6 terms in the series.
Check the picture below.
they're at a 3:1 ratio, thus, 3 times.
I think it’s B. but i’m not 100% sure
Length of arc = (15/360) * 2*3.14*20 = 5.23 ins
circumference of the circle = 2*3.14*24 = 150.72
angle at center from 10 ft arc = (10/150.72) * 360 = 23.89 degrees