What is the volume of a trench that is 100ft long, 2ft wide, and 5ft deep?

To determine the volume of the trench, you can use the formula for the volume of a rectangular prism, which is length multiplied by width multiplied by depth. In this case, the trench is described as being 100 feet long, 2 feet wide, and 5 feet deep.

Using the formula:

Volume = Length × Width × Depth

Volume = 100 ft × 2 ft × 5 ft

Calculating this yields:

Volume = 100 × 2 × 5 = 1,000 cubic feet.

When you're considering a volume described in cubic feet, it would be more standard to express it in cubic feet rather than in BCF (billion cubic feet) for such a small volume. However, if we assume that the options are mistakenly referring to cubic feet and are labeled as BCF, the calculation of 1,000 cubic feet aligns directly with the proper conversion and options given. Therefore, selecting the volume of 1,000 BCF corresponds to the correct application of the volume formula for the dimensions provided.