Circumference and Area of a Circle

1. Find the area of a circle with a circumference of \(31.4\) units.

_________ units \(^{2}\)

2. What is the area of the following circle?

Either enter an exact answer in terms of \(\pi\) or use \(3.14\) for \(\pi\) and enter your answer as a decimal.

_________ units \(^{2}\)

Either enter an exact answer in terms of \(\pi\) or use \(3.14\) for \(\pi\) and enter your answer as a decimal.

_________ units \(^{2}\)

4. Find the area of a circle with a circumference of \(6.28\) units.

_________ units \(^{2}\)

5. Find the area of a circle with a radius of 2.

Either enter an exact answer in terms of \(\pi\) or use \(3.14\) for \(\pi\) and enter your answer as a decimal.

_________ units \(^{2}\)

6. Find the area of a circle with a diameter of 4.

Either enter an exact answer in terms of \(\pi\) or use \(3.14\) for \(\pi\) and enter your answer as a decimal.

_________ units \(^{2}\)

7.  Find the area of a circle with a circumference of \(18.84\) units.

_________ units \(^{2}\)