11.
如图,已知菱形ABCD对角线AC、BD的长分别为6cm、8cm,AE⊥BC于点E,则AE的长是( )
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| A. | 5$\sqrt{3}$ | B. | 2$\sqrt{5}$ | C. | $\frac{24}{5}$ | D. | $\frac{48}{5}$ |