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Number of square-triangle (square triangular number)

Number of square-triangle has the properties of a square and a triangular number.          


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Weighted average ratings

The calculator calculates the weighted average of the ratings of the following items.              
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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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Risk of Clostridium difficile infection bacilli

Calculator to the data given that the risk of C. difficile infection canes for your body. http://pl.wikipedia.org/wiki/Clostridium_difficile              
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Calculator social security contributions - the calculation of rates in Poland

Jak obliczyć wysokość składek ZUS? Jak obliczyć składkę na ubezpieczenie społeczne? Jak obliczyć ubezpieczenie zdrowotne?
Calculator to calculate gross salary given social security contributions deducted from the salary of the employee and the employer. [since 2008]            
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Number of wallpapers

Jak oszacować niezbędną ilość tapety?
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Calculator to estimate the necessary amount of wallpaper needed to wytapetowania room of the given dimensions.    
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Single-layer wall insulation

Calculator allows you to calculate izolacyjość single-layer wall.          
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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.