21^2/0.219 = 2013.69863
2 significant figures are the 20, so the answer is 2000
Answer:
Am am not that big brain
Step-by-step explanation:
2 Dewey you can still go to get
Answer:
what are you talking about
Answer: 12in
Step-by-step explanation:
Because We have to find the A C prime is 12.