Answer:
Part 5) [tex]C=8\pi\ cm[/tex]
Part 6) The ratio between the circumference and diameter of a circle, is equal to the number π
Step-by-step explanation:
The questions in the attached figure
Part 5)
we know that
The circumference of a circle is equal to
[tex]C=\pi D[/tex]
where
D is the diameter
we have
[tex]D=8\ cm[/tex]
substitute
[tex]C=\pi (8)[/tex]
[tex]C=8\pi\ cm[/tex]
Part 6) What is the ratio between the circumference and diameter of a circle?
we know that
The circumference of a circle is equal to
[tex]C=\pi D[/tex]
where
D is the diameter
so
The ratio between the circumference and diameter of a circle, is equal to divide the circumference by the diameter
[tex]\frac{C}{D}=\frac{\pi D}{D}=\pi[/tex]
