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A. Find the value of that maximizes the area of the figure.

(12-4x) ft
12 ft
b. Find the maximum area.
The maximum area is
(x + 2) ft
square feet.

A. Find the value of that maximizes the area of the figure. (12-4x) ft 12 ft b. Find-example-1

1 Answer

3 votes

Explanation:

Area of trapezoid height x average of bases

area = (x+2) * ( 12-4x + 12)/2

= (x+2) (12-2x) = 12x -2x^2 +24 -4x

area = -2x^2 +8x+24 will be a maximum at x = - b/2a = -8/(2*-2) = 2

x=2

Max area = 32 ft^2

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