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GENERAL MATH FORMULAS

AREA FORMULAS

  • CIRCLE:
  • pr2     (p=constant=3.142(approx), and r = radius)
  • RECTANGLE:
          ab     (a = width and b = height of rectangle)
  • SQUARE:
          a2       (a = width  = height of square, all sides equal)
  • TRIANGLE:
          1/2(bh)    (b = base width  and h = height of triangle)
 
         
SURFACE AREA

      

  • CYLINDER:
           2p(r2 + rh)       (p=constant=3.142(approx), r = radius, h = height)
  • CUBE:
          6a2   (a=length of each side of the cube)
  • RECTANGULAR PRISM:
          2(ab + ac + bc)  (a, b, and c are the lengths of the 3 sides)
  • SPHERE:
         4pr2     (p=constant=3.142(approx), and r = radius)
VOLUME FORMULAS
  • CUBE:
          a3       (a = length = width  = height of square, all sides equal)
  • CONE:
           1/3pr2h        (p=constant=3.142(approx), r = radius, h = height)
  • CYLINDER:
           pr2h        (p=constant=3.142(approx), r = radius, h = height)
  • PYRAMID:
          1/3(bh)    (b = base width  and h = height of pyramid)
  • RECTANGULAR PRISM:
          abc       (a = length, b = width and c = height of rectangular prism )

 

PERIMETER:

 

  • CIRCLE:
          pd  or 2pr   (p=constant=3.142(approx), d = diameter and r = radius)

 

  • SQUARE:
          4a or  a + a + a +a     (a = length of each side of square )

 

  • RECTANGLE:
          2(a + b) or  a + b + a + b     (a = length, b = height of rectangle)

 


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Last updated 11-03-2006