Derek plans to hang a shelf in his attic The walls are sloped and meet at the peak point A an shown in the figure below where wall All is 9 feet long and wall AC is 11 feet long A hole for shelf DE is drilled on wall AB 4 feet up the wall so that 80 4 Since Derek wants the shelf to be parallel to floor BC where should he drill hole E B 400 feet from C O489 feet from C 5 00 feet from C O611 feet from C E