Draw a line BE parallel to AD and draw a perpendicular BF on CD.
It can be observed that ABED is a parallelogram.
BE = AD = 13 m
ED = AB = 10 m
EC = 25 − ED = 15 m
For ΔBEC,
Area of ABED = BF × DE = 11.2 × 10 = 112
m2 Area of the field = 84 + 112 = 196 m2