Ineed some on the following.. (40 )

648   2: 5575.28 3:       - 4:

Step-by-step explanation:

1: volume of a cylinder  is base times height, base being (9^2) and height being well 8

2: equation for a volumes of a sphere is (4/3)(11)^3

3: if you square something it turns positive and negative by some sort of magic

4: radical means in root notation