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Circumference of an ellipse

The calculator calculates the circumference of an ellipse for a given length of the axis passing through it.    

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Weighted average ratings

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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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Freezing sea water

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Associated force of the hydraulic piston and the cylinder

Hydraulic cylinder is a mechanical akutatorem used for power transmission line by a linear thrust. Through the movement of the piston up and down over the forces and pressure. This calculator is used to calculate the two forces given angle for each operation.      
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Insulation of wall

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Keystone field

The calculator calculates the trapezoid box.          
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Calculate the cost of electricity consumption device

The calculator is designed to calculate the cost of using the selected appliance. Only devices running without interruption.