You use scale factor of 3/4 to create a dilated circle with a radius of 9 inches. What is the radius of the original circle? (1 point)
The radius of the original circle is found by dividing the radius of the dilated circle by the scale factor.
Since the scale factor is 3/4 and the radius of the dilated circle is 9 inches, we have:
Radius of original circle = Radius of dilated circle / Scale factor
Radius of original circle = 9 inches / (3/4)
Radius of original circle = 9 inches * (4/3)
Radius of original circle = 36/3 inches
Radius of original circle = <<36/3=12>>12 inches
Therefore, the radius of the original circle is 12 inches. Answer: \boxed{12}.