Friday

October 24, 2014

October 24, 2014

Posted by **Vic** on Monday, November 19, 2012 at 8:46pm.

A.)What is the total area enclosed by the fence?

B.) fencing costs $8 per linear foot. Jennifer plans to build the fence so that the length of the fence will be 25 feet on the 20 foot side of the pool. What is the cost of the fencing with this plan?

C.) Jennifer decides that the cost of her original plan is to expensive. She wants to find the dimensions of the fence with the least cost. What is a formula, C(w), for the cost of the fence if the length of the fence is w feet on the 20 foot side of the pool?

- Math -
**Vic**, Monday, November 19, 2012 at 11:03pmPlease Some help me with this problem!!!!!!!!!!!!!!!!!!!!!

- Math -
**Steve**, Tuesday, November 20, 2012 at 12:18amjust start by translating the facts into symbols.

(A)

the pool is 20 by 17, so its area is 340.

The total area will be 5 times that, or 1700.

(B)

the fence is 25 feet long, so its width is 1700/25 = 68 ft. The perimeter is thus 2(25+68) = 186 ft. At $8/ft that will cost $1488.

(C)

from (B) we know the cost is 8*2(w+1700/w).

C(w) = 16w + 27200/w

Don't know why it keeps mentioning the side along the length of the pool. All we care about is the fence, not its relationship to the pool.

**Answer this Question**

**Related Questions**

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

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

Math - A rectangular study area is to be enclosed by a fence and divided into ...

MATH - area question - I need help on where to begin with this problem. You are...

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

calculus (optimization) - a rectangular study area is to be enclosed by a fence ...

Math (Area) - I need help on where to begin with this problem. You are ...

Math - A family put a swimming pool in their backyard the rectangular backyard ...

pre calc. help!!!!!! - i am building a rectangular swimming pool. the pool is to...

Geometry - a rectangular swimming pool has an area of double 1500ft. The ...