The circumference of a circle is 37.68 millimeters. What is the circle's radius?

Question

Use 3.14 for ​𝜋.

Answer 1

The formula for calculating the circumference of a circle is:

C = 2πr

where C is the circumference, r is the radius, and π (pi) is a constant approximately equal to 3.14.

In this case, we know that the circumference is 37.68 millimeters. So we can plug this value into the formula and solve for the radius:

37.68 = 2πr

Dividing both sides by 2π, we get:

r = 37.68 / (2π)

r = 6.0 (rounded to one decimal place)

Therefore, the circle's radius is 6.0 millimeters.