A sheet of plywood is inches thick. How tall is the stack of 5 8 21 sheets?
To find the total height of the stack of sheets, we need to multiply the thickness of each sheet (0.75 inches) by the number of sheets (5 8 21).
0.75 inches x (5 + 8 + 21) = 0.75 inches x 34
Thus, the stack of 5 8 21 sheets is 25.5 inches tall.