1. Cost of fencing

2. Perimeter of the shape Cost of fencing What is Fencing?
Fencing is the total length of the boundary which is nothing
but perimeter of the shape.
Perimeter of the shape
Cost of fencing

3. Ans : Cost of fencing the square field is Rs 50,000
Example 1: Find the cost of fencing a square field of side 50m are the rate of
Rs 250 per m
Solution:
Given:
Side of square field = 50m
To find: Cost of fencing a square field
To find the cost of fencing, we need to determine the perimeter of a square.
Perimeter of a square = 4 x Side
= 4 x 50
= 200 m
Cost of fencing 1 m = Rs 250
Cost of fencing 200 m = 250 x 200
=Rs 50,000
Ans : Cost of fencing the square field is Rs 50,000

4. Ans : Cost of fencing the rectangular garden is Rs 528
Example 2: Find the cost of fencing a rectangular garden of length 19cm
and breadth 25cm at the rate of Rs 6 per cm
Solution:
Given:
Length of a rectangular garden = 19 cm
Breadth of a rectangular garden = 25 cm
To find: Cost of fencing a rectangular garden
To find the cost of fencing, we need to determine the perimeter of a rectangle.
Perimeter of a rectangle = 2 x (length + breadth)
= 2 x ( )
= 2 x 44 = 88 cm
Cost of fencing 1 cm = Rs 6
Cost of fencing 88 cm = 88 x 6
=Rs 528
Ans : Cost of fencing the rectangular garden is Rs 528

5. Ans : Cost of fencing the triangular land is Rs 1,950
Example 3: Find the cost of fencing a triangular land of side 5m, 7m and 14m
at the rate of 75 per m
Solution:
Given:
Side of triangular land = 5m,7m and 14m
To find: Cost of fencing a triangular land
To find the cost of fencing, we need to determine the perimeter of a triangle.
Perimeter of a square = sum of all sides =
= 26 m
Cost of fencing 1 m = Rs 75
Cost of fencing 26 m = 75 x 26
=Rs 1950
Ans : Cost of fencing the triangular land is Rs 1,950

6. Try these
Find the cost of fencing a rectangular garden of length 10 m and breadth 30 m at the rate of Rs 150 per m