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105./ Cross Section of a Gutter Seth has a piece of aluminum that
is 10 in. wide and 12 ft long. He plans to form a gutter with
a rectangular cross section and an open top by folding up the
sides as shown in the figure. What dimensions of the gutter
would maximize the amount of water that it can hold?
HIRAT Write a quadratic function for the cross-sectional
area and find the vertex.
A
10 in.
-12 ft
a. W
pr
HI
110
b. V
THI
c. W
109. Vari
that
1,
vari
Chi-
vari
D