Question

ray wants the larger of two aquariums.One aquarium has 20 in. by 20 in. and has a height of 18 inches.The other aquarium has a base that is 40 in. by 12in. and has a height of 12 in. Which aquarium is larger? By how much?

Answer 1

the first A. 20 x 20 x 18= 7200
the second A 40 x 12 x 12= 5670

the first is bigger by 1530

Answer 2

To find these measurements, just multiply.

20 x 20 = 400 x 18 = 7200 in.
40 x 12 = 480 x 12 = 5760 in.

So, the first aquarium is larger.
Subtract to find the difference.

7200 - 5760 = 1440 in.