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The calculator calculates the circumference of an ellipse for a given length of the axis passing through it.    

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Weighted average ratings

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Conversion between number bases

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Trigonometric functions calculator

Calculator by entering an angle in degrees or radians calculated values ​​of the basic trigonometric functions.
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Calculator allows you to calculate the amount of insulation panels needed to cover the walls of the building using the "light wet" or "dry light" methods.
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Dilution of solutions

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Illness Calculator - Calculate sickness (illness)

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Calculator calculates sick pay during sick leave, taking into account the various reasons for absence.              
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The line passing through the given points

Calculator gives the equation line passing through the points specified by the user in the Cartesian coordinate system.