A large, circular building has a diameter of 126 feet. Correct to the nearest whole foot, what is the circumference of the building?

To find the circumference of a circle, you need to know either the radius or the diameter. In this case, you are given the diameter, which is 126 feet.

The formula for the circumference of a circle is C = πd, where C represents the circumference, and d represents the diameter.

First, let's plug in the value for the diameter into the formula:

C = π × 126

You can use an approximation for the value of pi, such as 3.14.

C ≈ 3.14 × 126

Now, multiply the value of pi by 126:

C ≈ 395.64

However, we need to round to the nearest whole foot, so the circumference is approximately 396 feet.

Therefore, the correct answer, rounded to the nearest whole foot, is 396 feet.