All circles are similar. In this case, the scale factor (k) is 3. For any two similar figures (no matter the shape), the ratio of the areas is k2. So the ratio of the areas of the two circles is 32 = 9.
Zane A.
asked • 01/16/20word problem involving circles
The ratio of the circumferences of 2 circles is 3:1. Determine the ratio of the areas of the 2 circles.
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