4.A fence is to be built to enclose a rectangular area of 800 square feet. Then fencealong three sides is to be made of material that costs $2 a foot. The material forthe fourth side costs $6 a foot. Find the dimensions of the rectangle for the mostANS: 20 by 40economical fence.

Answered: Image /qna-images/answer/245876fc-2513-4767-a14a-b6848b517725.jpg

Answered: 4. A fence is to be built to enclose a…

Elementary Geometry For College Students, 7e

7th Edition

ISBN:9781337614085

Author:Alexander, Daniel C.; Koeberlein, Geralyn M.

Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.

Chapter8: Areas Of Polygons And Circles

Section8.2: Perimeter And Area Of Polygons

Problem 31E: Mary Frances has a rectangular garden plot that encloses an area of 48 yd2. If 28 yd of fencing are...

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Mary Frances has a rectangular garden plot that encloses an area of 48 yd2. If 28 yd of fencing are purchased to enclose the garden, what are the dimensions of the rectangular plot?
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4. A fence is to be built to enclose a rectangular area of 800 square feet. Then fence along three sides is to be made of material that costs $2 a foot. The material for the fourth side costs $6 a foot. Find the dimensions of the rectangle for the most ANS: 20 by 40 economical fence.