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Math

Field of the cylinder and

Jak obliczyć pole walca?
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Calculator based on the introduced: the radius of the cylinder base and calculates the area and volume.              

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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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Insulation of wall

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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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Freezing sea water

Calculator based on the average salinity of the basin are calculated freezing point of the water content by the formula Krummel.        
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The center point (mid point)

The calculator calculates the coordinates of the point located exactly halfway between two preset points in the two-dimensional plane.          
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Verifiers

Verifier numbers EAN-13 preview

 Verifier numbers EAN-13 Calculator allows you to verify the number entered EAN-13.