Question

Find the circumference of a circular swimming pool with a diameter of feet. Use as an approximation for . Round your answer to the nearest foot. Enter only the number.

Answer 1

To determine the circumference of any circle we need to use the following formula:

`C=2\cdot\pi\cdot r`

Where r is the radius, which is half of the diameter. For this problem we have a pool with diameter equal to 18 feet, therefore the circumference is:

`\begin{gathered} C=2\cdot3.14\cdot(18)/(2)=2\cdot3.14\cdot9 \\ C=56.52\text{ ft} \end{gathered}`

The circumference of the pool is approximately 57 feet.