Question

1. a circular pool has a radius of 7.5 feet. calculate the length of trim needed to go around the entire edge of the pool.

Explanation:

Step1: Recall circle circumference formula

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

Step2: Substitute given radius value

Substitute $r = 7.5$ feet into the formula:
$C = 2\pi \times 7.5$

Step3: Calculate the circumference

Simplify the expression:
$C = 15\pi \approx 47.12$ feet

Answer:

The length of trim needed is approximately 47.12 feet (or exactly $15\pi$ feet).