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To find: the perimeter of the school crossing sign
![Check Mark](/static/check-mark.png)
Answer to Problem 20PPS
The perimeter of the shape will be 122.9 in.
Explanation of Solution
Given:
Calculation:
The objective of the question is to find the perimeter of a school sign which is in the form of a triangular pentagon.
All dimensions are in inches
The entire pentagonal image can be divided into two parts. Upper isosceles right
The upper part is a 45°-45°-90° triangle and in it the hypotenuse ( h ) and side ( s ) have the relation
The side of a triangle is
The perimeter of the pentagonal sign board will be given by the summing of sides which define the shape.
Where b=breath of rectangle, /=length of rectangle, s =side of triangle
Keeping values, perimeter is
Conclusion:
Thus the perimeter of the shape will be 122.9 in.
Chapter 10 Solutions
Pre-Algebra Student Edition
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