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AREAS AND VOLUMES
Glossary of Mathematics | Measurement | Areas and Volumes
pi = 3.142
Plane Areas
| Rectangle | A = bh |  |
| Parallelogram | A= bh |  |
| Trapezium | A = (a+b)h/2 |  |
| Triangle | A = bh/2 |  |
| Circle |
A = pi r² Circumference = 2pi r |
 |
| Ellipse | A = 1/2 pi ab |  |
Surface Areas and Volumes
| Cylinder |
S = 2pi r² + 2pi rh V = pi r²h |
 |
| Cone |
S = pi r² + 2pi rl V = 1/3 pi r²h |
 |
| Sphere |
A = 4pi r² V = 4/3 pi r³ |
|
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