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Math Question

4. In the diagram, \( \overline{A F} \) and \( \overline{D B} \) intersect at \( C \), and \( \overline{A D} \) and \( \overline{F B E} \) are drawn such that \( \mathrm{m} \angle D=65^{\circ}, \mathrm{m} \angle C B E=115^{\circ} \), \( D C=7.2, A C=9.6 \), and \( F C=21.6 \). What is the length of \( \overline{C B} \) ? (1) \( 3.2 \) (2) \( 4.8 \) (3) \( 16.2 \) (4) \( 19.2 \)

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