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OpenStudy (anonymous):
The areas of two similar figures are 20 cm2 and 45 cm2. What is the scale factor of their corresponding sides? What is the ratio of their perimeters?
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OpenStudy (mertsj):
\[\sqrt{\frac{20}{45}}=\sqrt{\frac{4}{9}}=\frac{2}{3}= scale factor of sides = ratio of perimeters\]
OpenStudy (anonymous):
Thanks!
OpenStudy (mertsj):
yw
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