Minnesota Contractors Practice Exam

To determine the amount of concrete needed in cubic yards for pouring a slab, first, the dimensions must be converted to a consistent measurement unit, typically feet.

The dimensions provided are:

- Length: 72 feet 3 inches can be converted to feet as follows: 72 + (3/12) = 72.25 feet.

- Width: 88 feet 6 inches converts to feet as follows: 88 + (6/12) = 88.5 feet.

- Depth: 6 inches converts to feet as follows: 6/12 = 0.5 feet.

Next, calculate the volume in cubic feet using the formula for the volume of a rectangular prism:

Volume (cubic feet) = Length × Width × Depth

Volume = 72.25 × 88.5 × 0.5 = 3193.0625 cubic feet.

To convert cubic feet to cubic yards, we divide the volume in cubic feet by 27 (since 1 cubic yard = 27 cubic feet):

3193.0625 cubic feet ÷ 27 = 118.16 cubic yards.

This calculation indicates that the volume needed for the slab is approximately 118.16 cubic yards, which fits