Can someone please help me with this problem?
Problem: A Norman window has the shape of a rectangle surmounted by a semicircle. If the perimeter of the window is 30 ft, express the area A of the window as a function of the width x of the window.
This is what I got.
Where did "h" go ?
You need to write the perimeter = 30,
using 3 straight side lengths + semicircle length = 30.
You express "h" in terms of x with this.
Then you write area using skeeter's correction,
and h is then eliminated by substituting your formula for "h".