A new sidewalk will be 4 feet wide, 200 feet long, and filled to a depth of 3 inches (0.25 foot) with concrete. How many cubic yards of concrete are needed? The new sidewalk needs nothing cubic yards of concrete. (Round to one decimal place as needed.)

8.7 cubic yards of concrete

Step-by-step explanation:

Volume of concrete = length * width * depth = 200 feet * 4 feet * 0.25 foot = 200 cubic feet

200 cubic feet = [200 cubic feet * (1 yard/3 feet) ^3] = [200 cubic feet * 1 cubic yard/27 cubic feet] = 8.7 cubic feet (to one decimal place)