Math Problem Statement
- In the figure P Q R S is a square. PQ = 14 cm, PA = QB = RC = SD = 6 cm. What is the perimeter of quadrilateral A B C D ? (a) 32 cm (b) 40 cm (c) 24 cm (d) 56 cm ● 40 cm
Solution
Let's break this problem down step by step:
Given:
- PQRS is a square.
- PQ = 14 cm (Side length of the square).
- PA = QB = RC = SD = 6 cm (Lengths of the segments from the vertices of the square to the points A, B, C, and D, respectively).
The goal is to find the perimeter of quadrilateral ABCD.
Step-by-Step Solution:
-
Side Length of Square: Since PQ = 14 cm, the side of the square PQRS is 14 cm.
-
Points A, B, C, and D:
- Point A lies on side PQ such that PA = 6 cm. Therefore, AQ = PQ - PA = 14 - 6 = 8 cm.
- Point B lies on side QR such that QB = 6 cm. Therefore, BR = QR - QB = 14 - 6 = 8 cm.
- Point C lies on side RS such that RC = 6 cm. Therefore, CS = RS - RC = 14 - 6 = 8 cm.
- Point D lies on side SP such that SD = 6 cm. Therefore, DP = SP - SD = 14 - 6 = 8 cm.
-
Perimeter of Quadrilateral ABCD: To find the perimeter of ABCD, we need to add the lengths of the sides AB, BC, CD, and DA.
- AB = AQ + QB = 8 + 6 = 14 cm
- BC = BR + RC = 8 + 6 = 14 cm
- CD = CS + SD = 8 + 6 = 14 cm
- DA = DP + PA = 8 + 6 = 14 cm
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Total Perimeter: The perimeter of quadrilateral ABCD is the sum of these four sides:
Thus, the perimeter of quadrilateral ABCD is 56 cm.
Final Answer:
The correct answer is (d) 56 cm.
Would you like further clarification on any steps? Here are some related questions to explore:
- How do you calculate the perimeter of a square?
- How would the perimeter change if the segments PA, QB, RC, and SD were different?
- Can you explain how to find the perimeter of polygons with irregular sides?
- What is the relationship between the sides of a square and its diagonals?
- How would you calculate the area of quadrilateral ABCD?
Tip: In geometric problems, always start by identifying the known measurements and relationships. This helps in breaking down the problem into manageable steps!
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Math Problem Analysis
Mathematical Concepts
Geometry
Perimeter of Quadrilaterals
Properties of Squares
Formulas
Perimeter of a polygon = sum of the lengths of its sides
Theorems
Perimeter of quadrilateral
Suitable Grade Level
Grades 6-8
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