Answer:
The difference between the length of the sides of the fish tank is guy Harvey's restaurant and a fish tank in gift shop is 2 feet.
Step-by-step explanation:
The cube shaped fish tank in guy Harvey's restaurant has volume 64 cubic feet.
Volume of the cubic tank is given by,
V =

64 =

l =
![\sqrt[3]{64}](https://img.qammunity.org/2019/formulas/physics/middle-school/psqh2etcexqlq36i0oer37n14v4sfigc8z.png)
l = 4 feet
The cube shaped fish tank in the gift shop is 8 cubic feet
Volume of the cubic tank is given by,
v =

8 =

8 =
![\sqrt[3]{8}](https://img.qammunity.org/2019/formulas/physics/middle-school/wjihrycxrfvz47pj2ubpyo1l95ukletfhj.png)
a = 2 feet
The difference between the length of the sides is given by,
d = l - a
d = 4 - 2
d = 2 feet
The difference between the length of the sides of the fish tank is guy Harvey's restaurant and a fish tank in gift shop is 2 feet.