Liboko builds a rectangular storeroom. If the diagonal of the room is 1 312−−−−√1 312 mm and the perimeter is 8080 mm, determine the dimensions of the room.

A farmer wants to build a fence enclosing a rectangular area of . He wants to use the least amount of fencing material. Determine the dimensions of the fence that will have the least perimeter. 

A rectangular area of will be created. What are the dimensions of the rectangle that will give the minimum perimeter for this area?

A rectangular field with an area of 8000m2 is enclosed by 400 m of fencing. Determine the dimensions of the field to the nearest tenth of a metre.