Your answer has the area in terms of both and
Your answer should have only.
A Norman window has the shape of a rectangle surmounted by a semicircle.
If the perimeter of the window is 38 ft, express the area of the window
as a function of the width of the window.
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h | | h
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The semicircle has diameter and radius
The circumference of the semicircle is: .
The perimeter is: .
. . .
The area of the semicircle is: .
The area of the rectangle is: .
The total area is: . .
Substitute  into : .
. . which simplifies to: .
But check my work . . . please!