a fence must be built to enclose a rectangular area of 45000ft^2 fencing material costs $3 per foot for the two sides facing north and south and $6...

a fence must be built to enclose a rectangular area of 45000ft^2 fencing material costs $3 per foot for the two sides facing north and south and $6 per foot for the other two sides. find the cost of the least expenisve fence

the cost of the least expenisve fence is $___