Answers

2015-11-15T19:18:49+05:30

If a perpendicular from D to BC is drawn then it will be equal to AB,
then EC = 48-40 = 8 m.
In ΔDEC
D
 E^{2}  = D C^{2} -E C^{2}
D E^{2}  = 172 - 82 = 289 - 64 = 225
Or, DE = 15 m
Area of Trapezium


1 5 1
Area of trapeizum
1/2 x (48+40) x 15 = 44 x 15 = 660 sq m
Sorry I forgot to write it down