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Math

Area and perimeter of the cone

Area and perimeter of the cone Calculator by entering the radius of the base of the cone, and its height is calculated lateral surface area of the cone, the total area and volume.   The radius of the base of the cone            


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Math

Weighted average ratings

The calculator calculates the weighted average of the ratings of the following items.              
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Math

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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Math

Trigonometric functions calculator

Calculator by entering an angle in degrees or radians calculated values ​​of the basic trigonometric functions.
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Math

Keystone field

The calculator calculates the trapezoid box.          
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Building

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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Life

Calculator - dosage of CO2 in the aquarium

Ile co2 w akwarium? Dawkowanie co2 w akwarium.
The online calculator by entering the pH and kH values ​​to calculate the concentration of CO2 in the aquarium.                
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Chemical

The frequency of the relaxation based on the Arrhenius equation

Calculator based on the given temperature, the frequency of vibration and thermal activation energy calculated częsość relaxation.                    
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Verifiers

Verifier numbers EAN-8 preview

 Verifier numbers EAN-8 Calculator allows you to verify the number entered EAN-8.