Saturday

August 30, 2014

August 30, 2014

Posted by **km** on Thursday, June 28, 2012 at 9:39am.

- algebra -
**Steve**, Thursday, June 28, 2012 at 11:24amthe conditions require that the 4 posts are the corners of the rectangle. So, if the width is x, and the length is along the house, the fence used is x+x+(20-2x)

area = x(20-2x) = 2x(10-x)

the max is achieved when x is midway between the roots, or x=5.

The pen is thus 5x10, with area = 50

suppose the width is 6. The pen is then 6x8 with area = 48

suppose the width is 4. Then the pen is 4x12 with area = 48.

**Related Questions**

engineering mathematics 1 - your father wants to fence a rectangular area in ...

Math - we need to fence off a rectangular section of land in order to make some ...

calculus - A dog kennel with four pens is to be constructed. The pens will be ...

Math - A farmer has $2400 to spend to fence two rectangular pastures.The local ...

Math - An artist is designing the rectangular wire structure with four ...

preculculus - 27. A farmer wishes to enclose a pasture that is bordered on one ...

Grade 11 Math - A rectangular dog run is to be enclosed by a fence and then ...

math - Ms. Jacobs is planning to put a fence around a rectangular part of her ...

math - George wants to build a square fence using 80 meters of wire. What is the...

college algebra - A farmer has 1000 feet of fence a rectangular plot of land. ...