I'm looking for an online surface area and volume calculator, where I plug in various measurements of a cylinder or sphere and it calculates the answer for me. But I want one that approximates pi as 3.14. [more inside]
posted by 23skidoo on Nov 5, 2009 - 8 answers

CFAfilter: Where in NYC to buy HP 12C Platinum, today? [more inside]
posted by xiaolongbao on Jun 4, 2009 - 9 answers

A friend is working in an industrial plant and needs to frequently convert convert lbs to kgs. They currently use a calculator and divide by 2.2046, but find constantly punching in "xxxxx / 2.2046 =" tedious and error-prone. They'd like a reasonably-priced device (a calculator or PDA application) with reasonably sized buttons or a touch screen that would simplify this process. They'd like to have the answer displayed as digits were input (without needing to hit = or enter), as well as being able to clear the input amount without resetting the units to be converted. [more inside]
posted by theclaw on May 9, 2009 - 28 answers

Which one is right, Google or Excel? [more inside]
posted by JDHarper on Apr 2, 2009 - 22 answers