The picture shows a feeding trough that is shaped like a right prism. Surface A and B are identical trapezoids
(a) Label all the dimensions of one trapezoid face. What are the lengths of the 2 bases of the trapezoid? What is the height of each trapezoid face?

(b) Use the information from part b to answer, Surfaces A and B will be painted blue. What is the total area that will be painted blue? Show your work!

(c) The edges of the trapezoids need to be sanded. A piece of sandpaper advertises that it can send up to 20 cm. Will one piece of sandpaper be enough to sand all the edges of trough? Explain