You cannot have a trapezoidal cylinder. That is like a square circle - an impossible shape.
To calculate the volume of water in a semicircular trough, one should figure out the area of the cross section (the semicircle) first. Then, this number should be multiplied by the length of the trough.
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third of base's area by heiht
If you mean volume of a trapezoidal prism then it is: 0.5*(sum of parallel sides)*height*length
You cannot have a trapezoidal cylinder. That is like a square circle - an impossible shape.
If it is a rectangular trapezoidal pedestal: Calculate the area of the base of the pedestal, multiply by the height of the pedestal. If the angles of the pedestal are not 90deg.. i.e. if it is a pyramidal trapezoidal pedestal. Then calculate the volume as you normally would a rectangular trapezoidal pedestal, and subtract the volume of the missing triangular pieces with the formula 1/3 area of base X height.
volume=h/3(A1+A2*Under root A1*A2)
A cube cannot be trapezoidal. A cube MUST have only square faces. Second, what is the formula supposed to tell you: the total surface area? the volume? the angles? the side lengths?
area of base x height area of base x height
the volume of a trapezoidal prism is equal to the height times the base area of the trapezoid. First you find the area of trapezoid h(a+b)/2 h is the height of the trapezoid, not the height of the prism a is the length of the top b is the length of the bottom Then you find the volume of the trapezoidal prism with this formula H*h(a+b)/2 H is the height of the prism. Multiply H by the area of the trapezoid that you found in step one.
To calculate the volume of water in a semicircular trough, one should figure out the area of the cross section (the semicircle) first. Then, this number should be multiplied by the length of the trough.
Area of trapezoidal cross-section x length.
Volume = 1/2*(a+b)*h*l where a and b are the lengths of the parallel sides of the trapezium, h is the height of the trapezium, and l is the length of the prism.
Volume = area of cross-section*length
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