Concrete Calculation for New Sidewalk

How many cubic yards of concrete are needed for a new sidewalk?

The new sidewalk needs cubic yards of concrete.

Answer:

The new sidewalk requires approximately 12.1 cubic yards of concrete to be filled to a depth of 9 inches. To calculate the volume of concrete needed, we can multiply the width, length, and depth of the sidewalk.

The width is given as 6 feet, the length as 220 feet, and the depth as 9 inches (0.75 foot). Converting the width, length, and depth to feet, we have 6 feet, 220 feet, and 0.75 foot respectively. The volume of the sidewalk can be calculated as follows:

Volume = width × length × depth

= 6 feet × 220 feet × 0.75 foot

= 990 cubic feet

To convert the volume from cubic feet to cubic yards, we divide by 27 (since there are 27 cubic feet in a cubic yard):

Volume in cubic yards = 990 cubic feet ÷ 27

≈ 36.7 cubic yards

Rounding to one decimal place, the new sidewalk requires approximately 12.1 cubic yards of concrete.