How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Plumber Matthew Your Own Question
Plumber Matthew
Plumber Matthew, Plumber
Category: Plumbing
Satisfied Customers: 156
Experience:  Licensed Journeyman Plumber. Eleven years of Commercial and Residential plumbing.
12980637
Type Your Plumbing Question Here...
Plumber Matthew is online now
A new question is answered every 9 seconds

a cross sectional area of a circular duct is 226.865 square

This answer was rated:

a cross sectional area of a circular duct is 226.865 square inches. what would be the diameter of the duct?

I googled this. Couldn't find my Mathmatice for plumbers and pipefitters book LOL

 

Set: The diameter is x
then 3.14*x2=226.865
x=2.925

 

http://www.answerspice.com/c173/1977798/crosssectional-area-of-a-circular-duct-is-226865-square-inches-what-is-the-diameter-of-the-duct

 

 

best i can do. ill opt out if you like

Cant give you the answer but pi*R sq =3.142*Radius.squared gives square area with a given radius, so work it back, do it in mm the convert to inches so much easier, Rick

Edited by Rick Ridley on 6/9/2010 at 10:25 PM EST
Hello and thank you for your question.

The diameter of the circular duct is 17".

I hope this information is useful. If I can be of further assistance on this topic please let me know. Thanks!
Plumber Matthew, Plumber
Category: Plumbing
Satisfied Customers: 156
Experience: Licensed Journeyman Plumber. Eleven years of Commercial and Residential plumbing.
Plumber Matthew and other Plumbing Specialists are ready to help you
Hi you must understand that these questions you are getting, they are from some text book crank who has not seen a fitting in his life, I am 62 and been in the trade all my life and these questions are for text book quacks, not hands on fitters, there or two types of guys out there, them that can do the job, and them that can write/talk about it, them that can write about it sometimes seem to earn more money than them that do it, this is changing, become one of those who do the job, Rick