A new sidewalk will be 5 feet​ wide, 260 feet​ long, filled to a depth of 9 inches ​(0.75 ​foot) with concrete. How many cubic yards of concrete are​ needed?

Question

A new sidewalk will be 5 feet wide, 260 feet long, and filled to a depth of 9 inches (0.75 foot) with concrete. How many cubic yards of concrete are needed?

Answer 1

V = lwh

V = 260(5)(.75)

V = 975 feet³

 

1 yard³ = 27 feet³

V ≈ 975/27

V ≈ 36.1 yards³