Question

A fence must be built to enclose a rectangular area of 20,000ft^2. Fencing material costs $2.50 per foot for the two sides facing north and south and $3.20 per foot for the other two sides. Find the cost of the least expensive fence.

Answer 1

square root of 20000 = 141.4
total cost = 1611.96, minimum, however if you want a perfect number
then 200 by 100, total cost being 1640