Question

The diameter of a circle is 8mm. What is the circumference of the circle?

Answer 1

12.56
`mm^(2)`

Explanation:

c = 2
`\pi`r

or c =
`\pi`D

The diameter is the measure of a line segment going from one side the circle to the other and going through the middle of the circle. A radius is a line 1/2 a diameter. It is a line segment that goes from the center of a circle to a point on the edge of the circle.

C = (3.14)(4)

C = 12.56

Answer 2

Answer: 8π mm (in terms of π)

Explanation:

1) The formulas for solving the circumference of a circle is πd (π times diameter).

2) 8 times π equals 8π mm.

Hopes this helps!