Question 7: David wants to fill his water bottle. The cylindrical bottle has a radius of 4.5 in and a height of 9.10 in. How much water will he need if 3 ounces of water is equivalent to 2 cubic inches?

1st question
volume of the bottle in inches ?
cylinder volume = area x height
= pi x r² x h
= 3,14 x 4,5² x 9,10
the bottle volume is 578,62 in³
then
3 ounces of water...........2 in³
? ounces of water..........578,62 in³
? = 3 x 578,62 : 2
? ≈ 868 ounces of water