Hello, please help me with this Business Calculus problems A fence must be built to enclose a rectangular area of 45,000 ft 2 . Fencing material

Hello, please help me with this Business Calculus problems

A fence must be built to enclose a rectangular area of 45,000 ft2. Fencing material costs $2 per foot for the two sides facing north and south, and $4 per foot for the other two sides. Find the cost of the least expensive fence 

The north and south by variables x and east and west yArea 45000 ft 2A xyxy 45000Perimeter of the enclosureP 2x 2 yCost of each sideC 2 2x 4 2 y C 4x 8 yxy 4500045000yxC 4x 8 y 45000 C...