A fence must be built to enclose a rectangular area of 5000 ft². Fencing material costs $1 per foot for the two sides facing north and south and $2 per foot for the other two sides. Find the cost of the least expensive fence. The cost of the least expensive fence is $ . (Simplify your answer.)
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A fence must be built to enclose a rectangular area of 5000 ft^2. Fencing material costs $4 per foot for the two sides facing north and south and $8 per foot for the other two sides. Find the cost of the least expensive fence. The cost of the least expensive fence is $_
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