The cost of manufacturing a semi-circular window is the cost of the glass pane together with the cost of the framing material. When ordering this window, a customer specifies the length of the base of the window, shown as

l
l
.

If the cost of the framing material is $
11
11
per linear foot and the cost of the pane glass is $
27
27
per square foot, what is the total cost of a window with a base length of
4
4
feet?


Write a function named
C
C
that relates the total cost of the window to the length of the base of the window,
l
l
.

2 answers

Proof-read and fix your post
if the base has diameter d, then
the area is 1/8 pi d^2
the perimeter is d + 1/2 pi d
Now just multiply each of those values by their cost, and add it up.