Question

The cost of fencing a rectangular field at â¹18 per meter is â¹1980. If the width of the field is 23 m find its length

Answer 1

Cost of fencing the field = 1980

Perimeter of field = 1980/18
= 110m

Perimeter = 2(l+b)
110 = 2(l+23)
110/2 = l+23
55 = l+23
55-23= l
l = 32

Hope it helps.