Math

Field and volume of a sphere

Calculator by entering the radius of the sphere is calculated its surface and volume.

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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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Trigonometric functions calculator

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

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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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Math

Multiplication table

Multiplication table 20 × 20 gives the opportunity to multiply their arbitrary natural numbers (1-20).

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The geometric mean

Calculator based on the entered numbers separated by commas calculates the geometric mean.

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Medical

Calculator prothrombin time (INR)

Calculator to the data calculated INR international normalized ratio. http://en.wikipedia.org/wiki/Prothrombin_time

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Financial

Return on investment over the

Calculator allows you to calculate the return on equity of investment in any financial instrument in relation to the value obtained at the beginning and end of the period.