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


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Conversion between number bases

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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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Calculator Body Surface BSA (Body Surface Area)

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Single-layer wall insulation

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

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The calculator calculates the amount of collected rainwater from the roof of the given dimensions. Long description      
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Calculate how much you drink pure ethanol

On the basis of the data entered, the amount of drink and the percentage of alcohol content calculator calculates pure ethyl alcohol that we consume.