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Mathematics
Problem
A rectangular plot is to be fenced on all four sides with exactly 80 m of wire. For which length should each side be taken so that the enclosed area is maximised? a)
30
m
30\,\text{m}
30
m
b)
20
m
20\,\text{m}
20
m
c)
40
m
40\,\text{m}
40
m
d)
10
m
10\,\text{m}
10
m
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