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Field and circumference of a circle

Jak obliczyć pole i obwód koła?
The calculator based on the specified radius of the area and perimeter of a circle.          


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Weighted average ratings

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Conversion between number bases

Converter allows you to convert numbers between number bases - binary (binary), trójkowym, czwórkowym, Friday, szóstkowym, siódemkowym, octal (octal), dziewiątkowym, decimal (decymalnym) jedenastkowym, dwunastkowym, trzynastkowym, czternastkowym, piętnastkowym, hexadecimal (hex). Typed characters that are not numbers and the letters A, B, C, D, E, F are ignored.      
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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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ROCE - an indicator of the efficiency of investment

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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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Insulation of wall

Jak policzyć izolację ścian?
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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Calculator floor panels

Calculator based on the dimensions of the area to put the panels and occupancy data on number of panels in one package, calculate how much you have to buy packages of panels to cover the entire room.                          
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Sieve of Eratosthenes

The program generates the prime numbers in a given range using the sieve of Eratosthenes algorithm.