Similarity of Circles HSG.C.A.1 Grade Practice Test Questions TOC | Lumos Learning

Similarity of Circles HSG.C.A.1 Question & Answer Key Resources Lumos StepUp ACT Practice Program - Mathematics

Lumos StepUp ACT Practice Program - Mathematics Similarity of Circles

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Let the diameter of the first circle be \(d_1 = 20 cm\) and the diameter of the second circle be \(d_2 = 4 cm\). Let \(c_1 \ and \ c_2\) be their respective circumferences. Find the ratio \(\frac{c_1}{c_2}\) of the circumferences of the circles.