Please help, Luke is making a fence. He cut several boards that were shaped like right rectangular prisms. Each board measured 1/2 inch wide, 5 1/2 inches long, and 72 inches high. What is the volume of each of Luke's fence boards?

Your answer would be A because 1/2 time 5 1/2 times 72 is 198 because volume is length times width times height.