Answer:
The length of the radius, r is 18 cm.
Step-by-step explanation:
If the radius of a circle is r, then the circumference of the circle is
[tex]C=2\pi r[/tex]
It is given that circle O has a circumference of 36π cm.
[tex]36\pi=2\pi r[/tex]
Divide both sides by 2π.
[tex]\frac{36\pi}{2\pi}=\frac{2\pi r}{2\pi}[/tex]
[tex]18=r[/tex]
Therefore the length of the radius of the circle is 18 cm.
