Volume is found by multiplying the length, width, and height as follows:
[tex]V=l*w*h[/tex]
However they have already told us in the question that the area of the base is [tex]225 cm^{2} [/tex]. This was found by multiplying the length and the width, which means that they have done this for us already! Now we need to take the height and multiply is by [tex]225 cm^{2} [/tex] to get the total volume of the tank. Let's do that now:
[tex]V=(l*w)*h[/tex]
[tex]V=(225cm^{2})*18cm[/tex]
[tex]V=4,050 cm^{3} [/tex]
So now we know that the total volume of the tank is [tex]4,050 cm^{3} [/tex].
