Answer:
Radius: [tex]r=7.5\:units[/tex].
Diameter:[tex]d=15[/tex] units
Circumference: [tex]C=15\pi[/tex]
Step-by-step explanation:
In the given diagram, the [tex]d=15[/tex] units.
The radius of the circle is [tex]r=\frac{15}{2}=7.5\:units[/tex].
The circumference of the circle is given by
[tex]C=\pi d[/tex]
We substitute [tex]d=15[/tex] into the formula to obtain;
[tex]C=15\pi[/tex]
