Uploaded January 2016 | Updated September 2026, 2 weeks ago

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Volume of a prism is part of the math placement test prep course at MathHelp.com:
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This lesson covers the volume of a prism. Students learn that the formula for the volume of a prism is length times width times height, so the volume of a rectangular prism that has a length of 25 inches, a width of 4 inches, and a height of 9 inches, is 25 times 4 times 9, or 900 cubic inches. Students also learn that the formula for the volume of a cube is side length cubed, and the formula for the volume of a pyramid is 1/3 times the area of the base times the height of the pyramid. Students are then asked to find the volume of prisms, cubes, and pyramids.