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Un article trouvé pour ce sujet.
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Surface area of a contact lens |
2000-06-06 |
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Evie Contreras pose la question :
I would like to know how to calculate the surface area of a contact lens with a radius of 7mm? I know that the area of a circle is pi R squared, but a contact lens has a dome.
Harley Weston lui répond. |
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