
Thursday, April 17, 2014 


[Friday, January 29, 2010] 
I’ve been cleaning office buildings for years, but now I’m looking to start my own cleaning business. My question is, How do you determine the square footage of areas that are not squared, but oval or circular? 
Bidding & Estimating  Delaney Thomas 



And we thought that learning all that high school geometry was a waste of time. The area of a circle is found by multiplying the radius of the circle by itself and the result by Pi, 3.1416. A=(Pi)r² Remember, the radius is onehalf the diameter. The area of an oval (ellipse) is calculated by the formula, A=(Pi)ab, where a is one half the major axis and b is onehalf the minor axis. Multiply the product of these two by 3.1416 (Pi) and you will have your answer. For a graphic explanation of this one, look at: http://www.ehow.com/how_4760748_calculateareaoval.html Right. I didn’t remember that one from high school, either.
Lynn E. Krafft, ICAN/ATEX Editor lekrafft@juno.com

ICAN representative 




