Wednesday
August 20, 2014

Homework Help: calculus

Posted by Daniel on Sunday, November 20, 2011 at 4:12am.

A Norman window has the shape of a rectangle surmounted by a semicircle. If the perimeter of the window is 30ft, find the dimensions of the window so that the greatest possible amount of light is admitted.

I keep screwing up in creating my equation.

p = perimeter of window
l = length of rectangle
d = w = width of rectangle
circumference of a semi circle = 2(PI*r)/2 = rPi

I get p = rPi + 2L + 2W

I don't know what I am doing wrong since I am unable to get a proper derivative.

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Calculus - A Norman window has the shape of a rectangle surmounted by a ...
Calculus - A Norman window has the shape of a rectangle surmounted by a ...
calculus - A Norman window has the shape of a rectangle surmounted by a ...
cal - A Norman window has the shape of a rectangle surmounted by a semicircle (...
Math - A Norman window has the shape of a rectangle surmounted by a semicircle...
Math - A Norman window has the shape of a rectangle surmounted by a semicircle...
Calculus - A Norman window has the shape of a semicircle atop a rectangle so ...
Calculus - A Norman window has the shape of a semicircle atop a rectangle so ...
Calculus - A Norman window has the shape of a semicircle atop a rectangle so ...
Calculus - A Norman window has the shape of a semicircle atop a rectangle so ...

Search
Members