Question

The diameter of a circle measures 16 mm. What is the circumference of the circle? Use 3.14 for n, and do not round your answer. Be sure to include the correct unit in your answer. mm mm 16 mm Х $ ?

Answer 1

The diameter of a circle is the twic of the radius.

$\text{Radius}=\frac{Diameter}{2}$

The given diameter = 16mm

So, Radius = 16mm/2

Radius = 8mm

Circumference of the circle is express as :

$\text{ Circumference = 2}\Pi r$

Substitute the values and simplify

$\begin{gathered} \text{ Circumference = 2}\Pi r \\ \text{ Circumference=2(3.14)(8)} \\ \text{ Circumference=}50.24\text{ mm} \end{gathered}$

The circumference = 50.24mm

Answer: 50.24mm