Six Sigma is a set of techniques and tools for process improvement. It was introduced by engineer Bill Smith while working at Motorola in 1986. Jack Welch made it central to his business strategy at General Electric in 1995. Today, it is used in many industrial sectors.
One acre equals 0.0015625 square miles, 4,840 square yards, 43,560 square feet or about 4,047 square metres (0.405 hectares) (see below). While all modern variants of the acre contain 4,840 square yards, there are alternative definitions of a yard, so the exact size of an acre depends on which yard it is based.
Multiplying the length of the land times the width of the land (in feet) gives you the total land square footage and then converting that square footage into acres is as simply as clicking on the CALCULATE button. The area of a piece of property is important for an owner or a potential buyer to know.ou can use the Acre Calculator to find the square footage in a property that has uneven lengths or widths. For example, a parcel that is 70 feet wide but has a length of 160 feet on one side and 140 feet on the other is calculated in two steps.