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
To find the radius of the original circle, you need to divide the radius of the dilated circle by the scale factor.
Original radius = Dilated radius / Scale factor
Original radius = 9 inches / (3/4)
To divide by a fraction, you can multiply by its reciprocal:
Original radius = 9 inches * (4/3)
Multiplying the numbers:
Original radius = 36/3 inches
Original radius = 12 inches
The radius of the original circle is 12 inches.