The answer in here is d. 3:1. The reason is founded on the following basic calculation: <span>640/52=12.307. After doing the proportion you will see that he ratio is 3:1. Hope this is useful for you</span>
Answer:
1.3965*10^9
Step-by-step explanation:
Rounded to the nearest whole number is still 43
Pi = 3.14
3.14 * 3.14 = 9.86
