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area and volume formulas
| Description | Formula |
|---|---|
| pi= | 3.14 |
| pythagorean theorem | A^2+B^2=C^2 |
| area of triangle | A=1/2(base)x height |
| area of rectangle | A=length x width |
| area of trapezoid | A=1/2(sum of bases)x height |
| area of paralellogram | A=Base x height |
| area of circle | A=pi x r^2, If a circle has a radius of 4, its area is 3.14*4*4=50.24 If you know the diameter, the radius is 1/2 as large. |
| surface area of pyramid | SA=1/2(parimeter of base)x slant height + area of base |
| surface area of sphere | SA=4 x pi x r^2 |
| surface area of prism | SA= sum of areas of the faces |
| surface area of cylinder | SA=circumfrence of base x height + 2(area of base) |
| surface area of cube | SA=6 x (length of edge)^2 |
| volume of cone | V=1/3(area of base)x height |
| volume of pyramid | V=1/3(area of base)x height |
| volume of sphere | V=4/3 x pi x r^2 |
| volume of prism | V=area of base x height |
| volume of cylander | V=area of base x 2 x height |
| volume of cube | V=length x base x height |