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# What is a trapezoidal prism?

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A trapezoidal prism is a three-dimensional figure that consists of two trapezoids on opposite faces connected by four rectangles. A trapezoidal prism has six faces, eight vertices and 12 edges.

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The volume of a trapezoidal prism is computed by multiplying the surface area of one of the trapezoid faces by the distance between the two trapezoids. This method, multiplying the surface area of a base by the height, is the same for computing the volume of any prism. The surface area of a trapezoidal prism is computed by multiplying the surface area of one of the prisms by two and then adding the product of the perimeter of the trapezoid times the height of the figure.

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## Related Questions

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A cylinder is a three-dimensional figure that has two congruent parallel bases, which can either be circles or ellipses, joined by a curved surface. Its shape resembles that of a can of soda or a tissue roll. A cylindrical form can be made by rolling a piece of rectangular paper.

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A rectangular prism is a three-dimensional object that has six faces that are all rectangles. On a rectangular prism, opposite faces are both equal and parallel. Rectangular prisms also have the same cross section along their lengths.

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A prism works by slowing down light proportionally to wavelength as it enters into the prism, which causes the rainbow effect. Light changes speed as it moves from the air to another substance. This causes the light to change course.