What three-dimensional solid has 6 rectangular faces, 2 equal bases that are not rectangles, and 18 edges? triangular prism pentagonal prism hexagonal prism octagonal prism?

(05.02) mr. morris is going to save money and replace his sailboat's mainsail himself. he must determine the area of the mainsail in order to buy the correct amount of material. calculate the area of the parallelogram to determine how much material should be purchased. be sure to explain how to decompose this shape into rectangles and triangles. describe their dimensions and show your work.