Question

The radius of a circle is 3.9 millimeters. What is the circles circumference? Use 3.14 for pi round answer to the nearest hundredth

Answer 1

Answer: C = 24.492 mm

Explanation:

Our task is to find the circumference of the circle.

The formula is:
`C=2\pi r`, where c is the circumference and r is the radius.

Substitute 3.14 for pi and 3.9 for r:

`C=2*3.14*3.9`

`C=24.492\:mm`

Answer 2

Circumference is 24.49 milimeters

Explanation:

The formula to calculate the circumference of a circle is given by:

`\boxed{\sf Circumference = 2 * \pi * Radius}`

In this case:

Radius (r) = 3.9 millimeters

`\sf \pi = 3.14`

We can calculate the circumference as follows:

`\sf Circumference = 2 * 3.14 * 3.9`

`\sf Circumference = 24.492 millimeters`

Rounded to the nearest hundredth, the circumference is approximately 24.49 millimeters.