Dana and sandbox
Dana helped her dad build a sandbox for her younger sister. The sandbox is a rectangular prism 4 1/2 feet long and 4 feet wide. Dana filled it with sand to a depth of 1/2 foot using bags of sand, each containing 1/2 cubic foot. How many bags did she need to buy?
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You need to know the following knowledge to solve this word math problem:
arithmeticsolid geometrynumbersUnits of physical quantitiesGrade of the word problem
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