Consider a closed rectangular box with a square base with side x and height y. a. Find an equation for the surface area of the rectangular box. S(x, y) = 20 (x + 2y) dy when x = 3 feet and y = 5 feet. dx b. If the surface area of the rectangular box is 78 square feet, find dy dx

Algebra: Structure And Method, Book 1
(REV)00th Edition
ISBN:9780395977224
Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Chapter9: Systems Of Linear Equations
Section9.5: Multiplication With The Addition-or-subtraction Method
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Consider a closed rectangular box with a square base with side a and height y.
a. Find an equation for the surface area of the rectangular box.
S(x, y) =
20 (x + 2y)
%3D
dy
when x = 3 feet and y = 5 feet.
dx
b. If the surface area of the rectangular box is 78 square feet, find
dy
dx
II
Transcribed Image Text:Consider a closed rectangular box with a square base with side a and height y. a. Find an equation for the surface area of the rectangular box. S(x, y) = 20 (x + 2y) %3D dy when x = 3 feet and y = 5 feet. dx b. If the surface area of the rectangular box is 78 square feet, find dy dx II
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