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The radius of a circle is 9. Using π, which equation expresses the ratio of the circumference of the circle to the circle's diameter? A) C /9 = π B) C /18 = π C) C = 9π/r D) C = r /18π

Respuesta :

c/18=pie because this needs atleast 20 characters.hope this helps. and have a good day every one

Answer:

Option B is correct

[tex]\frac{C}{18} = \pi[/tex]

Step-by-step explanation:

Circumference of the circle(C) is given by:

[tex]C =\pi D[/tex]

where,

D is the diameter of the circle.

As per the statement:

The radius of a circle is 9

We know that:

[tex]\text{Diameter} =  2 \cdot \text{radius}[/tex]

then;

[tex]\text{Diameter} = 2 \cdot 9 = 18[/tex]

We have to find the ratio of the circumference of the circle to the circle's diameter:

[tex]C =\pi D[/tex]

Substitute the given value we have;

[tex]C=18 \pi[/tex]

⇒[tex]\frac{C}{18} = \pi[/tex]

Therefore, the ratio of the circumference of the circle to the circle's diameter is,

[tex]\frac{C}{18} = \pi[/tex]