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.
The area doesn't tell the dimensions., In fact, there are an infinite number of different â¦ shapes and dimensions that all have the same area. 1 acre is an area of 43,560 square feet. If it's a circle, the diameter is about 235.5 feet. If it's a square, each side is about 208.7 feet. square with an area of 1/2 acre has the following dimensions: Each of the four sides is 147.6 feet longThe perimeter of the square is 590.3 feet The diagonal measurement i â¦ s 208.7 feetThe area inside the square is 21,780 square feet.