Answer: 8 3/4 ft³
Explanation:
To calculate the volume of a parallelepiped, you have to multiply its three dimensions.
Then volume = 4/5 ft x 3 1/2 ft x 3 1/8 ft = 4/5 ft x 7/2 ft x 25/8 ft
volume = (4 x 7 x 25)/(5 x 2 x 8) ft³ = 700/80 ft³ = 35/4 ft³ = 8 3/4 ft³
Answer : 8 3/4 ft³