What is the maximum area of a rectangular yard that can be enclosed with 120 m of fencing
in each case?
a. The yard is enclosed on all four sides.
b. The yard is enclosed on three sides.
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you have 120 m of fencing. you divided that by the 4 sides you have to enclose. This gives you 30m. to find the area you multiply length x heights so 30m x 30m = 900 square meters.
you have the same amount of fencing but only 3 sides, so in this case you take 120/3= 40.
40 m x40 m=1600 square meters