algebra
posted by Buba .
Joe's larger tank is completely filled with water. He takes water from it to completely fill the small tank. Determine how many cubic inches of water will remain in the larger tank.
Large Tank: length 30in, width 12in, height 16in
Small Tank: length 12in, width 6in, height 9in

It looks like you are talking about rectangularprism tanks. I ams sure you know how to compute the volume of that geometrical shape.
V = L * W * H
Subtract the volume of the smaller tank from the volume of the larger tank and you will have the answer, in cubic inches, if W, L and H are in inches.
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