The length of the side of the square is 
Further Explanation:
The formula of area of square can be expressed as follows,

The formula of perimeter of the rectangle can be expressed as follows,

Here, s represents the side of square.
Given:
The cost of plugging in a square field is Rs 2450.
The cost for plugging per square meter is Rs 2.
Explanation:
The total area that plugged can be obtained as follows,

The length of the side of the square can be obtained as follows,

The length of the side of the square is 
Learn more:
- Learn more about inverse of the functionhttps://brainly.com/question/1632445.
- Learn more about equation of circle brainly.com/question/1506955.
- Learn more about range and domain of the function brainly.com/question/3412497
Answer details:
Grade: Middle School
Subject: Mathematics
Chapter: Mensuration
Keywords: length, square, area, side of square, width, breadth, area, dimension, measure of sides, dimensions of rectangle, expression, plugging, square field, Rs 2450, 2 per square meter, length of the side.