area and volume formulas
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Description 


Formula 


pi= 
3.14 

pythagorean theorem 
A^2+B^2=C^2 

area of triangle 
A=1/2(base)x height 

area of rectangle 
A=length x width 

area of trapezoid 
A=1/2(sum of bases)x height 

area of paralellogram 
A=Base x height 

area of circle 
A=pi x r^2, If a circle has a radius of 4, its area is 3.14*4*4=50.24
If you know the diameter, the radius is 1/2 as large.





surface area of pyramid 
SA=1/2(parimeter of base)x slant height + area of base 

surface area of sphere 
SA=4 x pi x r^2 

surface area of prism 
SA= sum of areas of the faces 

surface area of cylinder 
SA=circumfrence of base x height + 2(area of base) 

surface area of cube 
SA=6 x (length of edge)^2 

volume of cone 
V=1/3(area of base)x height 

volume of pyramid 
V=1/3(area of base)x height 

volume of sphere 
V=4/3 x pi x r^2 

volume of prism 
V=area of base x height 

volume of cylander 
V=area of base x 2 x height 

volume of cube 
V=length x base x height 

Created by:
tbjh
on 20040212