Question

The cost of fencing a square field at ₹12 per meter is 36000. Find the length of each side of fields

Answer 1

$meter \: fenced \: in \: \: 12 \: rupee \: = 1m \\ \\ meter \: fenced \: in \: 36000 \: rupee = 36000 \div 12 \\ \\ = 3000m \\ \\ perimeter = 4 \times a \\ 3000 = 4 \times a \\ a = 3000 \div 4 \\ a = 750m$