Annabeth 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 links 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
The volume of a cube is calculated by taking the side length cubed.
Volume of freshwater tank = side length^3 = 15^3 = 3375 cm^3
Volume of saltwater tank = side length^3 = 45^3 = 91125 cm^3
The volume of the saltwater tank is 91125 / 3375 = 27 times larger than the volume of the freshwater tank.