A spider and a fly are in a room that has length 8 m, width 4 m, and height 4 m. The spider is on one end wall 1 cm from the floor midway from the two side walls. The fly is caught in the spider’s web on the other end wall 1 cm from the ceiling and also midway from the two side walls. What is the shortest distance the spider can walk to enjoy his meal? (Hint: Draw a two-dimensional picture.)
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4m
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