Question

please answer ques 6&7

Answer 1

let the length of the side be =x
cost of fencing 1m=$1
total cost of fencing=$2400
so perimeter= 2400÷6
400
perimeter=4x
400=4x
x=100m
so length of one side is 100m
Area of square field =side×side
100×100
10000 m2