udrey works at a lab with a huge circular particle accelerator. It has been carefully engineered to have a circumference of 12.56 miles. What is the accelerator's radius?

Question

Use 3.14 for ​𝜋. If necessary, round your answer to the nearest hundredth.

Answer 1

The formula to calculate the radius of a circle when you know the circumference is:

radius = circumference / (2 * π)

Given that the circumference is 12.56 miles and we use 3.14 for π, we can calculate the radius as follows:

radius = 12.56 / (2 * 3.14)
radius = 3.98 miles

Rounded to the nearest hundredth, the accelerator's radius is approximately 3.98 miles.