Question

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

Answer 1

If the scale factor used to create the smaller circle is 1/5, then the radius of the original circle can be found by multiplying the radius of the smaller circle by the reciprocal of the scale factor.

Reciprocal of 1/5 is 5/1 = 5.

Thus, the radius of the original circle that was diluted is 5 * 18 cm = 90 cm.