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Dana helped her dad build a sandbox for her younger sister. The sandbox is shaped like a rectangular prism that is 4 1 2 feet long and 4 feet wide. Dana used bags of sand to fill the sandbox 1 2 of a foot deep. Each bag contains 1 2 of a cubic foot of sand. How many bags of sand did Dana use?

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adioabiola

The number of bags of sand needed to fill the sandbox is 18 bags

How to find volume of a rectangular prism

  • Length = 4 1/2 ft
  • Width = 4 ft
  • Height = 1/2 ft
  • Quantity of each bag of sand = 1/2 ft³

Volume = L × W × H

= 4 1/2 × 4 × 1/2

= 4.5 × 4 × 0.5

= 9 ft³

Number of bags of sand needed to fill the sandbox = volume of the sandbox ÷ quantity of each bag

= 9 ft³ ÷ 1/2 fr³

= 9 × 2/1

= 18 bags

Learn more about rectangular prism:

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