1 answer
(click or scroll down)
To find the radius of the original circle, we can use the relationship between the radius of the original circle and the radius of the dilated circle obtained by scaling.
Let r be the radius of the original circle.
Given that the dilated circle has a radius of 9 inches after scaling by a factor of 3/4, we can set up the following equation:
(3/4) * r = 9
To solve for r, we can multiply both sides of the equation by (4/3):
r = 9 * (4/3)
Simplifying, we get:
r = 36/3
r = 12
Therefore, the radius of the original circle is 12 inches.