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).
There are 4046.8252519 square meter in a acre. 1 Acre is equal to 4046.8252519 Square Meter. 1 acÂ² = 4046.8252519 mÂ². Used widely in the US customary system and the Imperial system, an acre is a unit of area equal to 1/640 of a square mile, or 0.4047 of a hectare, or 43,560 square feet.