zoe and the poison weed

GP-49. Suppose that Zoe is tethered to a 30-foot rope attached at E. Her grazing region will
extend around some barn corners. Sketch the region over which she can graze when the
rope is pulled tight.
a) Identify all of the subproblems you need to solve in order to find the area of Zoe's
grazing region.
b) Find the total area.
c) Find the probability that Zoe will eat the weed in four weeks if she is tied to this
rope, never eats the same patch twice, and the weed is located in her grazing
region. Suppose that Zoe is tethered to a 30-foot rope attached at E.

Using the same figure as in GP-45, suppose Zoe is tethered at point E with a rope 20 feet long.

Under the same conditions as the earlier problems, what is the probability that she eats the locoweed in one day?

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