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)
Let r be the radius of the original circle.
According to the given information, r * (3/4) = 9 inches.
Multiplying both sides of the equation by 4/3, we get r = (9 inches) * (4/3) = 12 inches.
Hence, the radius of the original circle is 12 inches. Answer: \boxed{12}.
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Let r be the radius of the original circle.
According to the given information, r * (3/4) = 9 inches.
To find r, we can multiply both sides of the equation by the reciprocal of 3/4, which is 4/3:
r * (3/4) * (4/3) = 9 inches * (4/3)
Simplifying the expression on the left side, we get:
r = 12 inches.
Therefore, the radius of the original circle is 12 inches.