. Riley noticed an aquarium in his mother’s office. The aquarium has the dimensions 16 in. by 8.5 in. by 10.5 in. The formula for volume is: . Another aquarium in the building has dimensions that are each triple the dimensions of the aquarium in Riley’s mother’s office. Riley thought that the volume would also triple. Is Riley correct? How many times greater is the volume of the larger aquarium than the volume of the smaller one? Show your work and explain your reasoning.

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First find the volume of the original aquarium. 16 x 8.5 x 10.5,  Then once you multiply those out, find triple the dimensions: 48 x 25.5 x 31.5 Once you find that volume, divide it by the original. 48 x 25.5 x 31.5 = 38556 16 x 8.5 x 10.5 = 1428 38556/1428 = 27 It makes sense that it is 27 and not 3 because you tripled 3 of the dimensions.

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