Area of Annulus

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Find Area of different objects like Annulus, Circle, Ellipse, Polygon, Parallelogram, Rectangle, Sector of Circles, Square, Trapezoid, Triangle, Equilateral Triangle

Please enter valid values for Outer Radius (R), Inner Radius (H) and click 'Calculate'

	Find Area of ...
Object:

Outer Radius (R):
Inner Radius (H):
Formula:	Area = π × (R² - H²) Where ... π = 3.141592654, R = Radius of outer circle, H= Radius of inner circle



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Area	Astrology	Baby Names	Banking	Birth Control
Chemistry	Chinese Astrology	City Info	Electricity	Finance
Fluids	Geography	Health	Length	Magnetism
Pregnancy	Radiation	Scientific	Speed	Technology
Telephone	Temperature	Time & Date	Train Info	Volume
Weight	World Clock	Zodiac Astrology	Other

Supported Conversion Types ...
Acceleration	Angle	Angular Acceleration	Angular Velocity
Area	Blood Sugar	Clothing Size	Computer Storage Unit
Cooking Volume	Cooking Weight	Data Transfer Rate	Date
Density	Dynamic Viscosity	Electric Capacitance	Electric Charge
Electric Conductance	Electric Conductivity	Electric Current	Electric Field Strength
Electric Potential	Electric Resistance	Electric Resistivity	Energy
Energy Density	Energy Mass	Euro Currency	Fluid Concentration
Fluid Flow Rate	Fluid Mass Flow Rate	Force	Frequency
Fuel Economy	Heat Capacity	Heat Density	Heat Flux Density
Heat Transfer Coefficient	Illumination	Image Resolution	Inductance
Kinematic Viscosity	Length	Luminance (Light)	Light Intensity
Linear Charge Density	Linear Current Density	Magnetic Field Strength	Magnetic Flux
Magnetic Flux Density	Magnetomotive Force	Mass Flux Density	Molar Concentration
Molar Flow Rate	Moment of Inertia	Number	Permeability
Power	Prefix	Pressure	Radiation
Radiation Absorbed	Radiation Exposure	Radioactivity	Shoe Size
Sound	Specific Volume	Speed	Surface Charge Density
Surface Current Density	Surface Tension	Temperature	Thermal Conductivity
Thermal Expansion	Thermal Resistance	Time	Torque
Volume	Volume Charge Density	Water Oil Viscosity	Weight

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