The volume of a rectilinear shape is the product of length, width, and height. This formula can be solved to find the height from the other given values. .. V = lwh .. h = V/(lw)
For this problem, we want the value of 8h, so we have .. 8h = 8V/(lw) .. = 8(10 2/3 ft^3)/((4 ft)(1 1/3 ft)) .. = (256/3 ft^3)/(16/3 ft^2) .. = 16 ft