Question

1. find the radius of a circle with a circumference of 21.99 feet.

Explanation:

Step1: Recall circumference formula

The formula for the circumference of a circle is $C = 2\pi r$, where $C$ is circumference and $r$ is radius.

Step2: Rearrange to solve for $r$

$$r = \frac{C}{2\pi}$$

Step3: Substitute $C=21.99$ feet

Use $\pi \approx 3.14$, then:
$$r = \frac{21.99}{2 \times 3.14} = \frac{21.99}{6.28}$$

Step4: Calculate the value

$$r \approx 3.50$$

Answer:

Approximately 3.50 feet