Question

Ashirt button has a diameter of 0.61 cm. Which of these is an approximate measurement of the circumference of the button?

0.29 cm
O
B
0.96 cm
1.92 cm
D
383 cm

Answer 1

1.92cm

Explanation:

Circumference of a circle is computed using the formula:

`C=2\pi r`

Where:

r = radius

π = 3.14

Since the radius is the distance of the center of the circle from any point of the circle and the diameter is the measure of a straight line that goes across the center of the circle from one side to the other, radius is half of a diameter. So the diameter = 2r.

We can then use the diameter to solve for the circumference by using the formula"

`C = \pi d`

So we just plug in what we know in the formula:

`C = \pi d\\\\C = (3.14)(0.61cm)\\\\C = 1.9154cm\cong1.92cm`