Answer:
30 inches
Step-by-step explanation:
The circumference of a circle can be found using:
c=πd
The circumference is 30π inches. Substitute 30π in for c.
30π=πd
The question asks for the diameter. We have to solve for d. π and d are being multiplied. To reverse this, divide both sides by π, because division is the opposite of multiplication.
30π/π=πd/π
The πs on the right and on the left will cancel out.
30π/π=d
30=d
The diameter is 30 inches
