Question

2. A cube-shaped aquarium has edges that are 3 ft long. The aquarium is filled with water that has a density of 62 lb/ft^3

Answer 1

(a)

3*3*3=27

27*62=1674

Your answer: 1674

(b)

No, no matter how much water there is, the density will never change.

Answer 2

Total mass of the filled aquarium  = 3*3 * 62 =  1674 pounds
As the table can only support  200 lbs the aquarium should not be put on the table.

(b) No   the deisity of the water is a constant