boundary


Definition of Boundary

  • Boundary is a border that encloses a space or an area.
More about Boundary
  • The distance around the boundary is called as ‘perimeter’.

Example of Boundary
  • The length of the three sides of a triangular field is 9 m, 5 m, and 11 m.
    The boundary or perimeter of the field is given as 9 m + 5 m + 11 m = 25 m.

Solved Example on Boundary

A gardener wants to plant 4 plants per meter along the boundary of a garden, which is represented by the quadrilateral ABCD shown in the figure. Calculate the number of plants required.

Choices:
A. 75
B. 80
C. 70
D. 60
Correct Answer: B
Solution:
Step 1: Perimeter of the quadrilateral ABCD = Sum of the four sides of the quadrilateral.
Step 2: = AB + BC + CD + DA
Step 3: = 3 + 8 + 4 + 5 = 20 meters [Substitute AB = 3, BC = 8, CD = 4, and DA = 5 and simplify.]
Step 4: The number of plants required = 20 × 4 = 80.

Related Terms for Boundary

  • Area
  • Distance
  • Perimeter