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) |
