Not sure if you are following convention of labelling vertices.
e.g. I would label ABCD by putting A as the top-left vertex of the trap.
I would then proceed counter-clockwise.
Is AD a common side?
I can't seem to reconcile the given data with my sketch.
Trapezium ABCD and ADEF have the same height and the ratio of their areas is 13:14 .
If AD = 10 cm and BC = 16 cm, find the length of EF.
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