Problem 89 of 7
Use circle similarity scale factor 7/2 to compare circumferences.
Using a hint is okay. It just tells the trainer to give you a little more review.
Hidden until you reveal it.
connect scale factor to circumference.
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Circumference ratio must equal the linear scale factor.
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Your answer is equivalent to the expected form.
Walkthrough
Full solution stays hidden until you ask for it.
1. Identify the linear scale factor between circles.
2. Recall circumference is a linear measure.
3. Use the same scale factor for circumference ratio.
Use the worked steps, then substitute the final answer back into the original relationship to confirm it satisfies the prompt.
Squaring the scale factor for circumference.