I think you are referring to this: The volume of the sink shaped like a half sphere is [2000/3] π in^2.
A. The volume of a cylinder =area of the base * height For this part the cup has a diameter, d, of 4 in and height, h, of 8 in. [2000 / 3]π / [32π] = 20.83 Answer: 21 cups.
B. For this part the diameter of the cup is 8 in and the height is 8 in And the number of cups needed is [2000π/3] / (128π) = 5.2 Answer: 5 cups
