The element silicon is used extensively as a semiconductor in solid-state devices in the computer and microelectronics industries. For this, hyperpure silicon is needed. The silicon is selectively doped with tiny amounts of boron, gallium, phosphorus or arsenic to control its electrical properties.
Â· just now. Asker's rating. Report Abuse. An acre is a measure of area that I will call A for now. L*W = A which gives L = A/W C = 2*(L + W) = 2*(A/W + W) So, as you can see, the circumference depends on the width (or L, whichever way you want to look at it).
Answer by Sdlombardi. Confidence votes 105. Because an acre is a measure of area, not length, it is defined in square feet. An acre can be of any shape so long as its area is exactly 43,560 square feet.The most standard shape for an acre is one furlong by one chain, or 660 feet by 66 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.