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OpenStudy (anonymous):
The ratio of corresponding sides of similar triangles is 4 : 9 . If the longest side of the smaller triangle is 36mm, what is the longest side of the larger triangle?
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OpenStudy (saifoo.khan):
4 : 9 36 : x Cross multiply.
OpenStudy (saifoo.khan):
4x = 324 x = 81
OpenStudy (kinggeorge):
\[36 \times {9 \over 4} = 81mm\]
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