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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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Calculate how long you go on foot

Calculator calculates the approximate time given distance and overcome the distance on foot.
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The range of the volume distribution of erythrocytes

Calculator by entering the standard deviation of the red blood cells and mean corpuscular volume calculated volume distribution span of erythrocytes. http://pl.wikipedia.org/wiki/Rozpi%C4%99to%C5%9B%C4%87_rozk%C5%82adu_obj%C4%99to%C5%9Bci_erytrocyt%C3%B3w              
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Calculator VAT refund for building materials

The calculator calculates the amount of VAT that can be refunded in respect of incurred expenses associated with the purchase of construction materials.                    
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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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MD5 generator

Jak wygenerować skrót wiadomości z użyciem algorytmu MD5?
Generates a message using MD5 algorithm.