a. Suppose the paper is 11"-wide by 13"-long. Let a represent the length of the side of the square cutout (in inches), and let V represent the volume of the box (in cubic inches). i. Write a formula that expresses V in terms of x. V = x(11-2x)(13-2x) ii. If the cutout length increases from 0.5 to 2.6 inches, how much does the volume of the box change by? 14.0608 |1 cubic inches Preview iii. Estimate the maximum volume for this box? Tip: Use a graphing tool like www.Desmos.com. * cubic inches Preview

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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### Educational Website Content

#### Problem Description

a. Suppose the paper is 11"-wide by 13"-long. Let \( x \) represent the length of the side of the square cutout (in inches), and let \( V \) represent the volume of the box (in cubic inches).

i. **Write a formula that expresses \( V \) in terms of \( x \).**

   \[
   V = x(11-2x)(13-2x)
   \]

ii. **If the cutout length increases from 0.5 to 2.6 inches, how much does the volume of the box change by?**

   - **Change in Volume:** 14.0608 cubic inches

iii. **Estimate the maximum volume for this box?**

   - *Tip: Use a graphing tool like [www.Desmos.com](http://www.Desmos.com).*

   - **Maximum Volume:** ___ cubic inches

iv. **What cutout length produces the maximum volume?**

   - **Cutout Length:** ___ inches

b. Suppose we instead create the box from a 5"-wide by 7"-long sheet of paper.

i. **Estimate the maximum volume for this box?**

   - *Tip: Use a graphing tool like [www.Desmos.com](http://www.Desmos.com).*

   - **Maximum Volume:** ___ cubic inches

ii. **What cutout length produces the maximum volume?**

   - **Cutout Length:** ___ inches

#### Instructions

- **Box 1:** Enter your answer as an expression. Example: 3x^2+1, x/5, (a+b)/c. Be sure your variables match those in the question. 

#### Visual Aid

There are green and orange shapes at the top, illustration not provided here. These may assist in visualizing how the box is formed from the piece of paper by cutting and folding along the specified lines.

### Diagram/Graph Explanation

The main aspect of this problem involves visualizing how a piece of paper is transformed into a box. You are given the paper's dimensions and must calculate how the cutout size affects the box's volume, ultimately finding the cutout size that maximizes the volume. Use the graphing tool suggested to plot and find the optimal solutions for the expressions given.
Transcribed Image Text:### Educational Website Content #### Problem Description a. Suppose the paper is 11"-wide by 13"-long. Let \( x \) represent the length of the side of the square cutout (in inches), and let \( V \) represent the volume of the box (in cubic inches). i. **Write a formula that expresses \( V \) in terms of \( x \).** \[ V = x(11-2x)(13-2x) \] ii. **If the cutout length increases from 0.5 to 2.6 inches, how much does the volume of the box change by?** - **Change in Volume:** 14.0608 cubic inches iii. **Estimate the maximum volume for this box?** - *Tip: Use a graphing tool like [www.Desmos.com](http://www.Desmos.com).* - **Maximum Volume:** ___ cubic inches iv. **What cutout length produces the maximum volume?** - **Cutout Length:** ___ inches b. Suppose we instead create the box from a 5"-wide by 7"-long sheet of paper. i. **Estimate the maximum volume for this box?** - *Tip: Use a graphing tool like [www.Desmos.com](http://www.Desmos.com).* - **Maximum Volume:** ___ cubic inches ii. **What cutout length produces the maximum volume?** - **Cutout Length:** ___ inches #### Instructions - **Box 1:** Enter your answer as an expression. Example: 3x^2+1, x/5, (a+b)/c. Be sure your variables match those in the question. #### Visual Aid There are green and orange shapes at the top, illustration not provided here. These may assist in visualizing how the box is formed from the piece of paper by cutting and folding along the specified lines. ### Diagram/Graph Explanation The main aspect of this problem involves visualizing how a piece of paper is transformed into a box. You are given the paper's dimensions and must calculate how the cutout size affects the box's volume, ultimately finding the cutout size that maximizes the volume. Use the graphing tool suggested to plot and find the optimal solutions for the expressions given.
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