The button on Anne’s jacket has a diameter of 8 millimeters. What is the button’s circumference?

To find the circumference of a button, you can use the formula for the circumference of a circle:

[ C = pi times d ]

where ( C ) is the circumference and ( d ) is the diameter.

Given that the diameter ( d ) is 8 millimeters:

[ C = pi times 8 ]

Using ( pi ) approximately equal to 3.14:

[ C approx 3.14 times 8 ]

[ C approx 25.12 text{ mm} ]

So, the correct answer is A 25.12 mm.