Toffi's Comments

@JCGross: Press Alt+Shift and your keyboard settings should switch to the american one!

20 yay! :o

There must be an error... I tried to use Pythagoras' theorem: 4² + (1/2(1/5a))² = a² (a = CD) Solve this for a and you'll get a = (40*sqrt(11)) / 33. Then, DE must be a/5 = (8*sqrt(11)) / 33. Finally the area *should* be (16 * sqrt(11)) / 33... Boo you died! Strange...