Tuesday

September 16, 2014

September 16, 2014

Posted by **Yadira** on Sunday, April 22, 2012 at 10:42pm.

- Algebra -
**Steve**, Monday, April 23, 2012 at 10:12amno figure, but from the context it appears to be a rectangle and something else. Since it's a church, and the same kind of problem has appeared here before, I assume the top portion is a semi-circle.

So, with width w and height h, the perimeter is w+2h+pi*w/2. The trim is not used between the top and bottom portions of the window.

So, we have

w+2h+pi*w/2 = 126

so,

h = 63 - (pi+2)w/4

window area is rectangle + half-circle

a = wh + pi/8 w^2

= w(63 - (pi+2)w/4) + pi/8 w^2

= 63w - pi/8 (2pi+3)w^2

da/dw = 63 - pi/4 (2pi+3)w

max/min area is where da/dw = 0

w = 252/(3pi + 2pi^2) = 8.64

Now you can figure the areas.

**Answer this Question**

**Related Questions**

Algebra - Window World, Inc. is responsible for designing windows for the ...

Math - a contractor's designing one side of an office building 48 feet in length...

Math HELP!! :( - a contractor's designing one side of an office building 48 feet...

Math - Please help Ms.Sue! a contractor's designing one side of an office ...

computer - What is the chronological order of the release of Microsoft GUI ...

Introduction to Computers - The command prompt found on Windows 7 and Windows 8 ...

math - The windows of a downtown office building are arranged so that each floor...

math - Diana designs stained-glass windows. She has a large supply of square ...

math (Ms.Sue) - your room has 2 windows.Each window occupies 11.76 square ft of ...

windows xp - In windows XP, which of the following icons is not found in the ...