My entry ‘Constructing a Cone’ was much to wordy ;-), therefore I wrote an online cone calculator.
Note: Unfortunately the online cone calculator seemingly doesn’t work under all circumstances and I don’t have the time to struggle through. That’s why I write the formula by all means behind.
Well, you have disabled javascript, which means that the online cone calculator doesn’t work anyway.
You have 2 options now:
- enable javascript
- calculate the cone data yourself using the following formula.
|
The black cone is what we want to get. small diameter = smaller desired diameter large diameter = larger desired diameter height = desired height |
|
|
QT = small diameter / 2 RS = large diameter / 2 PQ = QT * height / (RS – QT) PR = PQ + height PT = √((PQ * PQ) + (QT * QT)); angle to cut away = inner circle diameter = 2 * PT; |
|
And now proceed:
Draw two centered circles with the inner and outer diameter, draw the calculated angle and cut it away.
The result should be a template for a cone with the specified measurements ;-)
If you don’t have a protractor you can print and cut the degrees disk from the entry ‘Constructing a Cone’.
If you want to know more exactly what you’re doing here, check the entry ‘Constructing a Cone’ after all ;-)
Links:
Here at unikatissima: ‘Constructing a Cone’