From the drop-down list of the start up activity, are selected the geometric shape and from the toolbar the calculator button – "Calculates"
In the edit box labeled "Precision", can be set accuracy of up to 8 decimal places in the calculated results.
The location for the application (English, Bulgarian, French, Spanish or German), Help and information for application(About) are selected from the start up activity menu .
The calculator works almost the same way. For each figure in the edit fields, is entered data and only the ones we want to calculate remain empty. For example, for the right truncated pyramid of all 7 fields three (in any combination) can be calculated, in the other are given data that define the figure.
There is a particular feature. For example, if for a right truncated pyramid is required to determine the number of sides at a given volume, then the volume will change to the nearest top for the number of sides found