28. In a trapezium ABCD, AB || DC and DC = 2AB. EF || AB, where E and F lie on BC and AD respectively such that BE/EC = 4/3. Diagonal DB intersects EF at G. Prove that, 7EF = 11AB.

28. In a trapezium ABCD, AB || DC and DC = 2AB. EF || AB, where E and

1.	28. In a trapezium ABCD, AB \|\| DC and DC = 2AB. EF \|\| AB, where E and F lie on BC and AD respectively such that BE/EC = 4/3. Diagonal DB intersects EF at G. Prove that, 7EF = 11AB.
Answer» 28. In a trapezium ABCD, AB \|\| DC and DC = 2AB. EF \|\| AB, where E and F lie on BC and AD respectively such that BE/EC = 4/3. Diagonal DB intersects EF at G. Prove that, 7EF = 11AB.

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28. In a trapezium ABCD, AB || DC and DC = 2AB. EF || AB, where E and F lie on BC and AD respectively such that BE/EC = 4/3. Diagonal DB intersects EF at G. Prove that, 7EF = 11AB.

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