Question

The circumference of a circle equals pi times the diameter. Using 3.14 to approximate pi, what is the approximate circumference in inches of a circle with a diameter of 1/2 in. ?

Answer 1

wrong

Answer 2

The diameter is 1/2 in., so the radius is 1/2 * 1/2 = 1/4 in.
The circumference is 2 * pi * radius = 2 * 3.14 * 1/4 = 0.78 in.
Therefore, the approximate circumference of the circle is 0.78 inches.

Answer 3

I apologize for the error.

The diameter is 1/2 inch, so plugging in the value for pi as 3.14, the circumference of the circle can be calculated as follows:
Circumference = pi * diameter
Circumference = 3.14 * (1/2) inch
Circumference = 1.57 inches

Therefore, the approximate circumference of a circle with a diameter of 1/2 inch is 1.57 inches.