You use scale factor of 3/4 to create a dilated circle with a radius of 9 inches. What is the radius of the original circle?(1 point)
___ inches
12 inches
To find the radius of the original circle, you need to multiply the dilated circle's radius by the reciprocal of the scale factor. The reciprocal of 3/4 is 4/3.
Radius of original circle = 9 inches * 4/3
Radius of original circle = 36/3
Radius of original circle = 12 inches
Therefore, the radius of the original circle is 12 inches.