If you use a scale factor of 15 to create a circle with radius 18 cm, what is the radius of the original circle you dilated?(1 point)
Responses
9 m
9 m
90 cm
90 cm
3.6 cm
3.6 cm
180 cm
The correct answer is 1.2 cm.
To find the radius of the original circle, we need to divide the radius of the dilated circle by the scale factor.
Radius of dilated circle = 18 cm
Scale factor = 15
Radius of original circle = 18 cm / 15 = 1.2 cm