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FOR RYAN. Hi mate, from...

FOR RYAN. Hi mate, from the lens proof we discussed last week, could you provide me a new copy with the "t" values changed to a "w" (for width) and the "w" values changed to a "l" (length). That is more appropriate for my application of the formula. And then would you provide a worked example (using your formula) for a width of 2 and a length of 6...answer in cm2. and another worked example for a width of 4 and a length of 8.

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