6. Find the side length of the triangle

Answer variants:
3.486
0.486
1.486
2.486
In \(\triangle ABC\), \(D\) and \(E\) are points of the sides \(AB\) and \(AC\), respectively. If \(DE \parallel BC\), \(AD = 2 \ cm\), \(DB = 5 \ cm\) and \(AC = 8.7 \ cm\), then find \(AE\).
 
12.svg
 
The value of \(AE\) is
 \(cm\).
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