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Keystone field

The calculator calculates the trapezoid box.          


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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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Rainwater tank

The calculator calculates the amount of collected rainwater from the roof of the given dimensions. Long description      
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Redemption value calculator

Calculator based on the given amount of capital, the interest rate and the number of years calculated the approximate value of the redemption. The redemption value - part of the premiums paid in the form of financial resources, which is fixed in the contract returns a policyholder in case of cancellation of insurance before the end of the contract.                    
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Verifiers

NIP correctness in Poland

Jak sprawdzić poprawność numeru NIP?
Verifier allows you to validate the tax identification number entered
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Time of the lathe

The calculator calculates the processing time and cut the lathe on the basis of the information given workpiece.                      
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Examine the variability of the quadratic function

Calculator examines the variability of the course of a quadratic function in the field of real numbers.