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Question
A triangle LMN has been reduced by scale factor 0.8 to the triangle L' M' N'. Calculate: the length of LM, if L' M' = 5.4 cm.
Solution
Given that LMN is a triangle that has been reduced by scale factor m = 0.8 to the triangle L' M' N'
L'M' = 5.4 cm
So, LM (0.8) = L'M'
`=>` LM (0.8) = L'M'
`=>` LM (0.8) = 5.4
`=>` LM = 6.75 cm
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