GED Test Mathematics Formula Sheet

Area of a:

Parallelogram \(A = bh \)
Trapezoid \(A =\frac{1}{2}h(b_1+ b_2)\)

Surface Area and Volume of a:

Rectangular/Right Prism \(SA = ph + 2B\) \(V = Bh\)
Cylinder \(SA = 2 \pi rh + 2 \pi r^2 \) \(V = \pi r^2h\)
Pyramid \(SA = \frac{1}{2} ps + B\) \(V =\frac{1}{3}Bh\)
Cone \(SA = \pi r + \pi r^2 \) \(V =\frac{1}{3} \pi r^2 h\)
Sphere \(SA = 4 \pi r^2 \) \(V =\frac{4}{3} \pi r^3\)
  \(p = \)  perimeter of base \( B; \pi =  3.14 \) 

Algebra:

Slope of a line \( m = \frac{(Y_2 - Y_1)}{(X_2 - X_1)}\)
Slope-intercept form of the equation of a line \( y =mx + b\)
Point-slope form of the Equation of a line \( y - y_1 = m(x - x_1)\)
Standard form of a Quadratic equation \( y = ax^2 + bx +c\)
Quadratic formula \(x={-b\pm\sqrt{b^2-4ac}\over 2a}\)
Simple interest \( I = Prt\)
  (I = interest, p = principal, r = rate, t = time)