A scientist suggests keeping indoor air relatively clean as follows: Provide two or three pots of flowers for every 100 sq ft of floor space under a ceiling of 8 ft. If your classroom has an 8-ft ceiling and measures 35 ft by 40 ft, how many pots should it have?
What is the volume of a waterbed mattress that is 7 ft by 4 ft by 1 ft?
Find the volume of the cylinder. Use 3.14 for . Round your answer to the nearest hundredth.

Solve the problem. Use 3.14 for , and round your answer to the nearest tenth. The foundation for a cylindrical flower bed is a cylinder 17 feet in diameter and 5 feet high. How much concrete is needed to pour the foundation?

Solve the problem. Use 3.14 for , and round your answer to the nearest tenth. A cylindrical flower vase is 3 inches across the top and 9 inches high. How much water can it hold?

An exercise cube measures 27 in. on each side. What is its volume?
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