Anna Beth has a freshwater fish tank and a saltwater fish tank. They are both cubes. The side length of the freshwater tank is 15 cm. The side length of the saltwater tank is 45 cm. How many times larger is the volume of the saltwater tank than the volume of the freshwater tank?
To find the volume of a cube, you simply cube the side length.
For the freshwater tank: volume = 15^3 = 3375 cubic cm
For the saltwater tank: volume = 45^3 = 91125 cubic cm
To find how many times larger the volume of the saltwater tank is compared to the freshwater tank, you divide the volume of the saltwater tank by the volume of the freshwater tank:
91125 / 3375 = 27
Therefore, the volume of the saltwater tank is 27 times larger than the volume of the freshwater tank.