# Q : 1       In Fig. , ABCD is a parallelogram, and . If ,   and , find AD.

We have,
AB = 16 cm, AE = 8 cm and CF = 10 cm

Since ABCD is a parallelogram,
therefore, AB = DC = 16 cm
We know that, area of parallelogram (ABCD) = base . height
= CD  AE  = (16  8 )
therefore area of parallelogram  = AD  CF = 128

Thus the required length of AD is 12.8 cm

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