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I have also been looking at this, <br />PI R squared is a form of messuring the flow of Electricity (given that R = Resistance), also it can be used as a way of findinf the Area or the Circumference of a circle ( given that R = Radius) it sounds like a mixed up formula between Electricity, and the Circumference of a circle. is their a chance you typed it in wrong? i'm thinking of what formula it could possibly be.. <br />To accurately messure speed, you would have to take: <br /> <br />Distance (Traveled) times 60 / (elapsed) Time = Speed in Knots <br /> <br />/ = Devided by. <br />* Speed given in Nautical miles. <br /> (speed in MPH / 1.15 = Speed in Knots) <br /> <br />Thats 1 Speed equation. <br />and i'm sure it wasn't that one. <br />Well, if you typed it wrong i'm dying to know what it is. <br /> <br />Cheers, <br />kev
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