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Area of ​​a rectangle

The calculator can calculate the area of a ​​rectangle.


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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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Bernoulli scheme

Calculator allows you to calculate the probability of a given number of successes with a specified number of trials and probability of success.
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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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Battery life

Calculator based on the specified battery capacity and consumption estimates the time. Calculator does not take into account changes in CPU speed and action in the case of ACPI computers.            
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ROCE - an indicator of the efficiency of investment

The calculator calculates ROCE on the basis of these pre-tax profits, total capital and current liabilities ROCE (called Return On Capital Employed) - an indicator of the efficiency and profitability of the investment, which is the capital of the company involved.            
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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.