level: Formulas
Questions and Answers List
level questions: Formulas
| Question | Answer |
|---|---|
| Formula | sin |
| Formula: | cos |
| Formula: | tan |
| Formula: | area of a circle |
| Formula: | circumference of a circle |
| A = lw | area of a rectangle |
| P = 2l + 2w or P = 2(l + w) | perimeter of a rectangle |
| Formula: | area of a triangle |
| A = bh | area of a parallelogram |
| Formula: | area of a trapezium |
| V = lwh | volume of a cuboid |
| 2lw + 2wh + 2lh (sum of the area of all the faces) | surface area of a cuboid |
| Formula: | surface of a cylinder |
| Formula: | volume of a cylinder |
| Formula | volume of a pyramid |
| Formula: | volume of a cone |
| Formula: | surface area of a cone |
| Formula | volume of a sphere |
| Formula: | surface area of a sphere |
| Formula: | gradient/slope |
| Formula: | sum of interior angles |
| Formula: | interior angle in a regular shape |
| 360 degrees | sum of exterior angles |
| Formulas | distance/speed/time |
| only what A and B have in common | A n B (read as A intersect B) |
| everything in A AND everything in B | A U B (read as A union B) |
| everything NOT in A | A' (read as A complement) |
| I = PRT | Simple Interest |
| Formula | Compound Interest |
| Formula: | Pythagoras theorem |
| 1. Angle in a semicircle is 90 degrees 2. The tangent is perpendicular to the radius | Circle Theorems |
| Image | alternate angles |
| Image | corresponding angles |
| Image | vertical angles |
| always = 1 | sum of probability outcomes |
| probability of A x probability of b | Probability of A and B happening |
| probability of A + probability of B | Probability of A or B happening |
| measure from the north and always measure clockwise | How do you measure bearings? |
| Formula | multiplying indices with the same base |
| Formula | dividing indices with the same base |
| Formula | multiplying indices together |
| any number or letter to the 0 power = 1 | zero power |
| Formula | negative indices |
| Formula | percent change |
| y = y-value m = gradient/slope of the line x = x-value c = y-intercept (where the graph intersects the y-axis) | What do the letters in y = mx + c represent? |