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Circumference of an ellipse

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

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Cash liquidity ratio

Calculator based on the introduced: the financial resources and current liabilities are calculated ratio of cash. CES - tells you how much current liabilities can be settled without delay, if they become due and payable at that time.              
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Sieve of Eratosthenes

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Calculator floor panels

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Area of ​​a rectangle

The calculator can calculate the area of a ​​rectangle.