Hi Komal
Cost of Ploughing the square field = Rate of ploughing x Area of Square
Now, given that
Rate of ploughing per 10 square meter = Rs 2
Rate of ploughing per 1 square meter = Rs 2/10
And,
Area of Square = (Side)2
Now, putting values in equation
Cost of Ploughing the square field = Rate of ploughing x Area of Square
2450 = 2/10 x (Side)2
2450 x 10/2 = (Side)2
(Side)2 = 2450 x 10/2
(Side)2 = 12250
Side = root(12250)
Side = 110.679 m
Thus, length of square = 110.679 m
Do you want us to show you how to calculate square root?