Answer:
Step-by-step explanation:
Volume = surface area of base * height

The formula is 2(wl+hl+hw) to calculate surface area fo a rectangular prism.
18 = x
__ __
5 4
x = 18•4 / 5
72/5 = 14.4 final answer
Again, decimals and fractions represent all the values in between integers. Decimals are simply one step more of simplification from fractions.