Thursday

December 18, 2014

December 18, 2014

Posted by **idk** on Tuesday, February 19, 2013 at 12:48am.

1. Describe the dimensions she should us to build the are. use whole numbers only

2. How much fencing wil she need

3. Explain how you found that answer?

- math -
**Reiny**, Tuesday, February 19, 2013 at 9:08amI largest area of a rectangle is obtained when that rectangle is a square, so

x^2 = 48

x = √48 = 4√3 = appr 6.9 or 7 as a whole number.

She will need 4(7) or 28 ft of fencing

If the rectangle is 6 ft by 8 ft, then the area will be exactly 48 ft^2

and the perimeter would be 2(6) + 2(8) = 28 ft

notice that if the rectangle is 7 by 7, we get an area of 49 ft^2, so using the same perimeter as the 6 by 8 rectangle we get a larger area.

Either way, the least amount of fencing she needs is 28 ft

**Answer this Question**

**Related Questions**

Pre Calculus - A contractor is to fence off a rectangular field along a straight...

Math - 1. A gardener has 140 feet of fencing to fence in a rectangular vegetable...

college Algebra - A rectangular fence is to be built along a river using the ...

Math - Jennifer plans to fence a rectangular area around her rectangular ...

Calculus 1 - A rectangular field is enclosed by a fence and seperated into two ...

College Algebra Word Problem - A rectangular dog pen is to be made to enclose an...

math - farmer Pete has enough seed plant a rectangular garden that is 48 square ...

fdr - a rectangular fence is constructed that will enclose 100 ft sq of land. ...

College Cal 1 - A farmer wants to fence off a rectangular field of area 15000 ...

Calculus...again - I'm gonna have abunch of questions, cause I have a test. >...