How many?

Square Metres

The square metre or square meter is the SI derived unit of area with symbol m2. It is the area of a square with sides one metre in length. The White House in Washington with it's six stories is 5,100 square meters of floor space and includes 132 rooms and 35 bathrooms, 412 doors, 147 windows.

Square Yards

The area equal to a square that is 1 yard on each side. To give an idea of how big a square yard is, a standard sized basketball court has an area of 592.77777780 square yards.