Answer:
The total amount of water needed is 540 cubic inches.
Step-by-step explanation:
A cubic prism has three dimension. Lenght l, width w and height h.
It's volume is:
[tex]V = l*w*h[/tex]
In this question:
[tex]l = 12.5, w = 6, h = 8[/tex]
Dimensions in inches, so the volume will be in cubic inches.
[tex]V = 12.5*6*8 = 600[/tex]
The volume is 600 cubic inches.
What is the total amount of water needed, to the nearest cubic inch, to fill 90% of the aquarium with water?
This is 90% of 600. So
0.9*600 = 540
The total amount of water needed is 540 cubic inches.