Answer:
30 inches
Step-by-step explanation:
The circumference of a circle can be found by using 2[tex]\pi[/tex]r, or [tex]\pi[/tex] * d.
Since we are given the circumference of the circle, 30[tex]\pi[/tex], you can find the diameter by solving for the diameter (after substituting in the circumference) in the formula for circumference.
[tex]30\pi =\pi *d[/tex]
To cancel out [tex]\pi[/tex] you can divide both sides of the equation by pi. Now you have:
30 = d
Therefore the diameter of the circle is 30 inches.
