[SOLVED] Convert Pounds per Inch^2 To Newtons per Meter

Ok the Question Reads:

Convert 28lb/in^2 to Newtons/m^2. (1lb = 0.2248 Newtons, 1in = 2.540cm)

This is my incorrect attempt at working it out

=28*0.2248*254^2

=406089.5104

The Correct answer (obtained from a online conversion calculator) is

193053.2038

How do I arrive at that answer

Re: [SOLVED] Convert Pounds per Inch^2 To Newtons per Meter

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Re: [SOLVED] Convert Pounds per Inch^2 To Newtons per Meter

Always use units in your conversion calculation.

28lbf/in^{2} x 4.448N/lbf x (39.37in/m)^{2} = 193000 N/m^{2}

I happen to remember that there are 25.4mm/in. So

28lbf/in^{2} x 4.448N/lbf x (1in/25.4mm)^{2} x (1000mm/m)^{2} = 193000 N/m^{2}

If you happen to know that 1N = .2248lbf, then

28lbf/in^{2} x 1N/.2248lbf x (39.37in/m)^{2} = 193000 N/m^{2}

If you don’t use units, you really don’t know what you are doing.