Arectangle basin is being filled with water. the basin is 7 feet long, 12 feet wide, and 4 feet high. how much water is going to be needed to fill the basin.

In this problem your going to need to find volume.

The formula for volume of a rectangular prism (Which is what we are trying to find)

Is Volume = Length x Height x Width

So in your problem we can create the equation:
7 x 4 x 12 = Your answer.

7 x 4 = 28
28 x 12 = 336.

Your going to need 336 feet^3 (D)

Hope this helps!
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