Answer:
3 is correct answer
Step-by-step explanation:

hope it helped you:)
Answer:
v=πr^2h
v/πr^2=h
Step-by-step explanation:
Not to seem rude, but you might have better luck in Business. Unless someone here know accounting lol
70 liters ÷ 100 samples= 0.7 or 7/10 liter per sample
Hope this helps! :)