Question

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.)

11 years ago