Answer: D . 18 units
Step-by-step explanation:
We know that the circumference of the circle is given by :-
[tex]C=2\pi r[/tex], where r is the radius of the circle.
Given : The radius of the circle = 3 units
Then , the circumference of the circle will be :-
[tex]C=2\pi (3)[/tex]
We know the the value of [tex]\pi =3.14[/tex], we estimate the value of [tex]\pi =3[/tex]
[tex]C=2(3) (3)=18[/tex]
Hence, the the best estimate of the circumference of this circle is 18 units.
