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a trapezoidal prism
A right trapezoidal prism has 12 sides. Any prism has three times the number of sides of its cross-sectional shape. A trapezoid has four sides, so a [right] trapezoidal prism has 3 x 4 = 12 sides.
No. A trapezoid is a 2-dimensional shape. A prism is a 3-D solid. A trapezoidal prism has ends in the shape of identical trapezoids, and that is its cross-section.
If you mean volume of a trapezoidal prism then it is: 0.5*(sum of parallel sides)*height*length
6 faces