Win a copy of TDD for a Shopping Website LiveProject this week in the Testing forum!
programming forums Java Mobile Certification Databases Caching Books Engineering Micro Controllers OS Languages Paradigms IDEs Build Tools Frameworks Application Servers Open Source This Site Careers Other Pie Elite all forums
this forum made possible by our volunteer staff, including ...
Marshals:
• Campbell Ritchie
• Paul Clapham
• Ron McLeod
• Jeanne Boyarsky
• Tim Cooke
Sheriffs:
• Liutauras Vilda
• paul wheaton
• Henry Wong
Saloon Keepers:
• Tim Moores
• Tim Holloway
• Stephan van Hulst
• Carey Brown
• Frits Walraven
Bartenders:
• Piet Souris
• Himai Minh

# Calculating an arch's width

Ranch Hand
Posts: 515
• Number of slices to send:
Optional 'thank-you' note:
So a friend of mine and I are disputing over the abilty to calculate an arch's width (Specifically the St Louis Gateway Arch). Let me fill you in first. A friend of mine went down to St. Louis Gateway Arch. Seeing pictures of it they were thinking you would be able to calculate the width of it give that you had the hieght. I disagreed and stated you would need other parameters first before doing this. I'm just not remembering what parameters you would need. Your thoughts and input...???

Ranch Hand
Posts: 305
• Number of slices to send:
Optional 'thank-you' note:
Ug, you are making me unearth long buried memories and most of them are rotted!

Here goes... If you know the height, to calculate the width you must know the parabolic formula that represents the shape of the arch. Assuming the arch is an real parabolic shape and not someone's idea of of a parabolic arch.

So my answer is uh... yeah... maybe.

Dale DeMott
Ranch Hand
Posts: 515
• Number of slices to send:
Optional 'thank-you' note:
That's what I was thinking as well. I knew you had to have more information than JUST the height. The formula that represents the arch must also be present.

 Oh, sure, you could do that. Or you could eat some pie. While reading this tiny ad: free, earth-friendly heat - a kickstarter for putting coin in your pocket while saving the earth https://coderanch.com/t/751654/free-earth-friendly-heat-kickstarter