scale drawings a quick check if you use a scale factor of 1/5 to create a circle with a radius 18 CM what is the radius of the original circle you dilated
To find the radius of the original circle, you need to reverse the dilated scale factor.
If the scale factor used to dilate the circle is 1/5, the radius of the original circle would be:
Original radius = Dilated radius / Scale factor
Original radius = 18 cm / (1/5)
Original radius = 18 cm * (5/1)
Original radius = 90 cm
Therefore, the radius of the original circle you dilated is 90 cm.