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Mathematics
OpenStudy (anonymous):

Triangle ABC is similar to triangle DEF and has a ratio of similarity of 6:1. If side ED measures 12 mm, how long is side BA?

OpenStudy (anonymous):

\[ \frac {BA}{DE}=6 \] Can you finish it from here?

OpenStudy (anonymous):

\[ BA = 6 DE=6(12)=72 \]

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