A triangular lot was formed by three straight lines. Bearing of line AB is N45E and is 160 m long; line AC and BC is 190 m long. Point E is 100 m from A on side AB connects point D on side AC which...

A triangular lot was formed by
three straight lines. Bearing of line AB is N45E
and is 160 m long; line AC and BC is 190 m
long. Point E is 100 m from A on side AB
connects point D on side AC which divides
the area, making area AED to be 2/5 of the
whole area. Find the distance DE.

a. 120.6 m                 c. 99.01 m
b. 109.1 m                 d. 88.14 m