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Geometry formulas and equations

Home > By Subject > Geometry > Formulas/ Equations

The formulas listed below are commonly required in geometry to calculate lengths, areas and volumes. You can use these to help with your child’s math homework

List of formulas

Area of Square = length2 (l x l)
Area of Rectangle = length x height
Area of Triangle = 1/2 x length x height
Area of circle

= r2

( = 3.14 approximately)
Circumference of a circle circumference = 2 r
( x diameter)
Volume of rectangular prism = length x height x depth
Volume of cylinder

= area of base x height

= (d/2)2 x h

annotated cylinder
Volume of cone

= 1/3 x area of base x height

= 1/3 x (d/2)2 x h

 

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