Concept explainers
(a)
To sketch: a model to represent the problem
(a)
Answer to Problem 12STP
Explanation of Solution
Given:
The surface area = 62 square feet
Height should be 1 foot shorter than the width
Length should be 3 feet longer than the height.
Calculation:
Draw the figure in terms of the width.
Width = w
Height = h
Length =
The figure will be:
Conclusion:
Therefore, the model was drawn.
(b)
To write: a polynomial that represents the surface area of the tool chest.
(b)
Answer to Problem 12STP
The surface area is
Explanation of Solution
Given:
Calculation:
Let x be the width.
Then height will be
And lenth will be
So, surface area,
Conclusion:
Therefore, the surface area is
(c)
To find: the dimensions of the of the tool chest.
(c)
Answer to Problem 12STP
The width = 3 ft., height=2ft., length=5ft.
Explanation of Solution
Given:
Calculation:
Part C:
Now surface area = 62.
So,
So, width = 3 ft., height=2ft., length=5ft.
Conclusion:
Therefore, the width = 3 ft., height=2ft., length=5ft.
Chapter 11 Solutions
Algebra 1
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