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A right rectangular prism is intersected by a horizontal plane and a vertical plane. The cross section formed by the horizontal plane and the prism is a rectangle with dimensions 8 inches and 12 inches. The cross section formed by the vertical plane and the prism is a rectangle with dimensions 5 inches and 8 inches. Describe the faces of the prism, including their dimensions. Then find its volume.

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  1. 12 by 8 by 5
    five is the height because in vertical plane. 12 by 8 is the top and bottom.
    Sketch a drawing of it !

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  2. Same question on my homework, the answer is 12x8x5, volume is 480.

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  3. Thanks

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