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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.)

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princessesther2011

Answer:

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)

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