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


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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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The converter accepts input alphanumeric phone number and converts it to a numeric format.    
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Calculator based on the specified time from seeing lightning until you hear thunder in the distance calculated discharge occurred.          
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Calculator to the data shows the approximate braking the vehicle to a complete stop.                        
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Date calculator

Calculator allows you to calculate the date, which will be after a specified number of days, months and years from a certain date.
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GFR - glomerular filtration rate

Glomerular filtration rate (called glomerular filtration rate, GFR) - the amount of plasma filtered per unit time by the so-called glomeruli. primary urine. Is usually given in ml / min. GFR allows the assessment of renal function.