if you use a scale factor of 1/5 to create a circle with radius 18cm, what is the radius of the origanil circle you dialatoed
To find the radius of the original circle that was dilated, you need to multiply the radius of the dilated circle by the scale factor.
Scale factor = 1/5
Radius of dilated circle = 18 cm
Radius of original circle = Scale factor * Radius of the dilated circle
Radius of original circle = (1/5) * 18 cm
Radius of original circle = 3.6 cm
Therefore, the radius of the original circle that was dilated is 3.6 cm.