If you use a scale factor of 1/5 to create a circle with radius 18 cm what is the radius of the original Circle you dilated
If you use a scale factor of 1/5 to create a circle with a radius of 18 cm, the radius of the original circle you dilated can be calculated by multiplying the radius of the dilated circle by the reciprocal of the scale factor.
The reciprocal of 1/5 is 5/1, which simplifies to 5.
Therefore, the radius of the original circle is 18 cm * 5 = 90 cm.