What is the volume of the rectangular prism?

If the measure of xyz is 81 what is the measure of yz

Find the height of a square pyramid that has the volume of 32 ft.³ and a base lengthof 4 feet

Tyler enjoys the fish so much that after his birthday his family decides to take him to a famous aquarium a tank at the aquarium is similar to his tank with the scale factor of 8 how many times greater is the volume of the tank at the aquarium than the volume of tyler tank