Thread: Stuck on problem

Hi all, i'm a little stuck on this question:



Does the perimeter = 3h + πr?
Area of the window = h^2 + ( πr^2 / 2)?

Originally Posted by PIR

Hi all, i'm a little stuck on this question:

Does the perimeter = 3h + πr?
Area of the window = h^2 + ( πr^2 / 2)?

No

The length of the bottom is 2r and not h
The perimeter is 2r + 2h + πr
The area is πr²/2 + rh

Originally Posted by running-gag

No

The length of the bottom is 2r and not h
The perimeter is 2r + 2h + πr
The area is πr²/2 + rh

how do i go about rearranging the equations to find r and h? given that the perimeter has to equal 12meters.

Originally Posted by PIR

Hi all, i'm a little stuck on this question:



Does the perimeter = 3h + πr?
Area of the window = h^2 + ( πr^2 / 2)?

Search the forums for threads about norman window eg. http://www.mathhelpforum.com/math-he...w-problem.html

and you will probably find your question answered.

its called a norman window!!!

Thank you!

Could someone tell me if i simplified this correctly?

A =1/2πr^2+2r((12-2r-πr)/2)

I got:
A=12r-(2+π/2) r^2