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A "prism" is a three-dimensional solid.

For a rectangular prism, V = L x W x H and 24 x 21 x 12 = 6048 in3

For a triangular prism, with a cross-section that is a triangle,

the volume is equal to one-half of the rectangular volume.

V = (L x W x H)/2 = 3024 in3

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Q: What is the volume of a prism with length 24 in width 21 in and height 12 in?
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