Given:
rectangular prism.
length = 10 inches
width = 2/3 foot
height = 9 inches
convert width from foot to inches. 1 foot = 12 inches
2/3 foot 12inches/ft = 2/3 12 inches = 212/3 = 24/3 = 8 inches
Volume of rectangular prism = length width height
V = 10 inches 8 inches * 9 inches
V = 720 in³