what is the formula for surface area of a trapezoidal prism?
The formula for finding the surface area of the trapezoidal prism is Surface Area (S.A.)=(b1+b2)h +PH. The formula for finding the volume of a trapezoidal prism is V=Hh(b1+b2)/2, similar to the area of a trapezoid, which is simply h(b1+b2)/2.