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
Area of Square  = length^{2} (l x l)  
Area of Rectangle  = length x height  
Area of Triangle  = 1/2 x length x height  
Area of circle  = r^{2} ( = 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 

Volume of cone  = 1/3 x area of base x height = 1/3 x (d/2)^{2} x h 
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