| A | B |
|---|
| Circumference | Perimeter of Circle = 2*r or *d |
| Area of a Circle | *rsquared |
| Radius | 1/2 diametor |
| Diameter | 2(r) |
| Area Triangle | 1/2bh - b=base, h=height |
| Area rectange | lxw; l=length; w=width |
| Volume rectangular solid | l x w x h; lengthxwidthxheight |
| Volume any right solid (also cylinder) | area of base x height - use above formulas to find the area of the base and then solve |
| Volume Pyramid | 1/3(volume of a rt solid of the same height) remember you must first find the volume of the rt solid by using the above formula and then multiply by 1/3 |
| Volume Cone | 1/3 (volume of a right solid of the same height) remember first find the volume of the rt. solid with formula above and then multiply by 1/3 |
| Volume Sphere | 2/3(volume of a right cylinder of the same height) find the volume of the rt. cylinder with formula above then multiply by 2/3 |
| or Volume Sphere | 4/3*rcubed |
| Surface Area Sphere | 4*rsquared |
| Lateral surface area of any rt solid | perimeter x height |
| area of semicircle | *rsquared/2 (used when figuring areas of multishape figures) |
| circumference of semicircle | 2*r/2 or *r (used when figuring wierd shape perimiters) |
