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The radius of a circle is 15. Using π, which equation expresses the ratio of the circumference to the diameter of a circle?

Question 2 options:

C=r30π

C15=π

C=15πr

C30=π

Respuesta :

calculista

Answer:

The ratio of the circumference to the diameter of a circle is equal to [tex]\pi[/tex]

The equation is  [tex]\frac{C}{30}=\pi[/tex]

Step-by-step explanation:

we know that

The circumference of a circle is equal to

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

we have

[tex]D=2r=2(15)=30\ units[/tex] ----> the diameter is two times the radius

so

[tex]C=30\pi\ units[/tex]

so

[tex]\frac{C}{30}=\pi[/tex]

The ratio of the circumference to the diameter of a circle is equal to

[tex]ratio=\frac{30\pi}{30}[/tex]

simplify

[tex]ratio=\pi[/tex]

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