We are given a circle with a diameter of 72 ft. We are asked to determine its area. To do that we will use the following formula:

Where "D" is the diameter. Replacing the values:

Solving the operations:

Now we are asked to determine the circumference of the circle, to do that we use the following formula:

Replacing the values:

Solving the operations:

Since the circumference is the measure of the longitude of the circle, if it were to be surrounded by tape this is the measure we would have to use.