Concept explainers
To find:The perimeter of a figure with 9 pentagons.
Answer to Problem 40SR
The perimeter is
Explanation of Solution
Given:
Length = 1 foot.
Calculation:
Consider the figure,
If each side has a length of 1 foot.
Our goal is to find the perimeter of a figure with 9 pentagons.
The perimeter of the first figure having one pentagon is,
Similarly the perimeter of the second figure is
The perimeter is equal to 3 times the number of pentagons.
So
Now we find the perimeter of the figure with 9 pentagons,
Use the formula
Conclusion:Thus, the perimeter of the figure with 9 pentagons is
Chapter 10 Solutions
Pre-Algebra, Student Edition
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