Area
Find the area of a:  using the equation:  
Circle  a = r^{2}  
Parallelogram  a = bh  
Rectangle  a = lw  
Trapezoid  a = 0.5h(b_{1} + b_{2})  
Triangle  a = 0.5bh 
Perimeter
Find the perimeter of a:  using the equation:  
Circle (The perimeter of a circle is called Circumference) 
c = 2r c = *d 

Parallelogram  p = 2a + 2b  
Rectangle  p = 2l + 2w  
Trapezoid  
Triangle  p = a + b + c 
Volume
Find the volume of a:  using the equation:  
Sphere  v = 1.33**r^{3}  
Right Circular Cylinder  v = r^{2}h  
Right Circular Cone  v = .33**r^{2}h 
Form of equation:  Formula:  
Standard Form  ax + by = c  
Slope Intercept Form/ Y Intercept Form  y = mx + b  m = slope b = y intercept  
X Intercept Form  x = (y  b)/m  b = y intercept m = slope  
PointSlope Form  y  y_{1} = m(x  x_{1})  (x_{1},y_{1}) m = slope 