Calculate the side AD of triangle ABC — task. Mathematics State Board, Class 10.

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Answer variants:

2.88

3.88

0.88

1.88

In \(\triangle ABC\), \(DE \parallel BC\) and \(\frac{AE}{EC} = \frac{2}{5}\). If \(DB = 4.7 \ cm\), then \(AD =\)

\(cm\).

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