How many cubic feet or cubic yards of concrete are required to construct the tank?

To determine how much concrete is needed to construct a tank, you first need to calculate the volume based on the tank's dimensions. Once the volume is established in cubic feet, you can convert that measurement into cubic yards, since concrete is often ordered in cubic yards for larger projects.

The conversion factor between cubic feet and cubic yards is significant—the fact that one cubic yard equals 27 cubic feet is essential. Therefore, to convert cubic feet to cubic yards, you take the cubic feet measurement and divide it by 27.

By calculating using the given dimensions of the tank, if the final result yields 30 cubic feet when calculated in cubic feet, dividing by 27 would give you approximately 1.11 cubic yards, making this choice the correct answer.

It's crucial to ensure that all calculations are based on accurate measurements and relevant dimensions of the tank, as even minor errors can inflate or deflate the volume results significantly. This context explains why option B reflects an accurate assessment of the concrete volume needed.