Question

If it costs $1600 to fence a rectangular park of length 20 m at the rate of $25per m square find the breadth of the park and its perimeter. Also Find the area of the field

Answer 1

length of the field is 20m,
total cost is 1600$ and the rate of per m^2 is $25then
area of field =( total cost )/ 25
=1600/25
=64 m^2
area of field is 64m^2
length * breadth =64
20* breadth=64
breadth= 64 /20
=3.2m
perimeter of rectangular park = 2(l+b)
=2(20+3.2)m
=2(23.2)m
=46.4m