| A | B |
|---|
| area of a circle | pi r squared |
| circumference of a circle | pi d |
| area of a triange | 1/2 base x height (or 1/2bh) |
| area of square or rectangle | base x height or bh |
| volume of a rectangular prism | length x width x height or lwh |
| volume of a cylinder | area of the top + area of the base + area of the side which means |
| area of a trapezoid | 1/2(b1+b2)h |
| perimeter of a triangle | s+s+s |
| perimeter of a square | s+s+s+s or 4s |
| perimeter of a rectangle | s+s+s+s or 2L + 2W |
| surface area of a rectangular prism (box) | 2(lw+lh+wh) OR (area of the front, side, top times 2) |
| volume of a cylinder | pi x r² x h |
| diameter equals | 2r |
| radias equals | d/2 |
