Math Problem Statement
Solution
Let's work through the problem in parts:
(a) Drawing and labeling the diagram:
You start with a square piece of material, 24 cm on each side. From each corner of the square, you cut out equal squares with side lengths , and fold up the edges to create an open-top box. When you remove the corners and fold up the sides, the new dimensions of the box will be:
- Length:
- Width:
- Height:
The box is formed by folding up the flaps along the sides created by cutting out the squares. I'll describe this:
- Draw a square representing the original material with side 24 cm.
- Draw smaller squares of side length cut out from each corner.
- After folding, label the height of the box as , the new length as , and the width as .
(b) Verifying the volume formula :
The volume of a box is given by the formula for the volume of a rectangular prism: .
- Length =
- Width =
- Height =
So,
Simplify :
Now, substitute into the volume equation:
To match the given formula, express this in factored form:
This confirms that the formula given is correct.
(c) Completing the table:
To observe the behavior of the function , we need to calculate the volume for each value of given in the table:
Volume | |
---|---|
3.5 | ? |
3.9 | ? |
4 | ? |
4.1 | ? |
4.5 | ? |
5 | ? |
I will now calculate these values. Let's compute the volumes for each value of .Here are the computed volumes for the values of from the table:
Volume | |
---|---|
3.5 | 1011.5 cm³ |
3.9 | 1023.516 cm³ |
4 | 1024 cm³ |
4.1 | 1023.524 cm³ |
4.5 | 1012.5 cm³ |
5 | 980 cm³ |
You can observe that the maximum volume occurs when , which results in a volume of . This matches the function's maximum value near .
Let me know if you have any questions or if you'd like further explanation on any part.
Here are 5 related questions to consider:
- What happens to the volume as approaches the extremes of 0 and 12?
- Why does the volume decrease after ?
- How would the problem change if the side length of the original square was different?
- What is the significance of factoring the volume formula in part (b)?
- How could you find the maximum volume using calculus instead of a graphing utility?
Tip: When finding maximum or minimum values, use calculus to check critical points by setting the derivative to zero.
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Math Problem Analysis
Mathematical Concepts
Geometry
Algebra
Quadratic Functions
Formulas
Volume of a rectangular prism V = length * width * height
Quadratic formula
Theorems
Quadratic Function Maximum
Factoring quadratic expressions
Suitable Grade Level
Grades 10-12
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