Answer
The first figure is enlarged by a scale factor of 2.5 to get the second figure.
Explanation
When a figure is dilated (reduced or enlarged) by a scale factor, the relationship between the original length, new length and the scale factor is given as
[tex]\text{Scale factor = }\frac{New\text{ length}}{Original\text{ }length}[/tex]
For this question,
Scale factor = ?
New length = 1.5
Original length = 0.6
Scale factor = (1.5/0.6) = 2.5
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