Answer: b) 18.37
<u>Step-by-step explanation:</u>
Since the intial t-value is 1960 and the final t-value is 1990, then t = 30
C = 2 pi r
16 = 2 pi r
16/2 = pi r
8 = pi r
8/pi = r
2.55 = r
8 goes into 74 nine times but there is a remainder of 2
9 and a remainder of 2 or 9 and 1/4
Answer:
30 square inch
Step-by-step explanation:

Answer:
21 moats
Step-by-step explanation:
.70 x 30 = 21