A box is to be made out of a 12 cm by 14 cm piece of cardboard. Squares of side length r cm will be cut out of each c a) Express the volume V of the box as a function of x. 4x - 50x2 + 16&r cm %3D b) Give the domain of V in interval notation. (Use the fact that length, width and volume must be positive.) c) Find the length L, width W, and height H of the resulting box that maximizes the volume. (Assume that W < L). L = 9.34 cm W = 7.34 cm H = 2.33 cm %3!

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter2: Equations And Inequalities
Section2.6: Inequalities
Problem 79E
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A box is to be made out of a 12 cm by 14 cm piece of cardboard. Squares of side length a cm will be cut out of each corner, and then the ends and sides will be folded up to form a box with an open top.
(a) Express the volume V of the box as a function of æ.
V =
4x° - 50x + 168x
cm³
(b) Give the domain of V in interval notation. (Use the fact that length, width and volume must be positive.)
(c) Find the length L, width W, and height H of the resulting box that maximizes the volume. (Assume that W < L).
L = 9.34 cm
%3D
W = 7.34 cm
%3D
H = 2.33 cm
%3D
(d) The maximum volume of the box is 159.73 cm³.
Transcribed Image Text:A box is to be made out of a 12 cm by 14 cm piece of cardboard. Squares of side length a cm will be cut out of each corner, and then the ends and sides will be folded up to form a box with an open top. (a) Express the volume V of the box as a function of æ. V = 4x° - 50x + 168x cm³ (b) Give the domain of V in interval notation. (Use the fact that length, width and volume must be positive.) (c) Find the length L, width W, and height H of the resulting box that maximizes the volume. (Assume that W < L). L = 9.34 cm %3D W = 7.34 cm %3D H = 2.33 cm %3D (d) The maximum volume of the box is 159.73 cm³.
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