CADDIT Website Knowledge Base Search: 


Calculating combined areasYou can find the total area of several combined regions by specifying points or by selecting entities. You can also subtract the areas of entities or polygons from a running total. To add areas to calculate a combined area
To subtract areas when calculating a combined area
As you select entities, the program displays the calculations. If the command bar is displayed, the information appears there. If the command bar is not displayed, the program opens the Prompt History screen and displays the calculations. The following type of information is an example of what is displayed: Entity ? Add ? Subtract ? <First point>: Choose Add Areas Together Adding: Entity ? Subtract ? <First point>: Choose Add Entities to Area Adding area: <Select entities>: Select the first entity Area = 64.6259, Perimeter = 33.3049 Total length = 33.3049 Total area = 64.6259 Adding area: <Select entities>: press Enter Adding: Entity ? Subtract ? <First point>: Choose Subtract Areas Subtracting: Entity ? Add ? <First point>: Choose Subtract Entities from Area Subtracting area: <Select entities>: Select the first entity to subtract Area = 3.1597, Circumference = 6.3012 Total length = 27.0036 Total area = 61.4662 Subtracting area: <Select entities>: Select the second entity to subtract Area = 3.1597, Circumference = 6.3012 Total length = 20.7024 Total area = 58.3066 Subtracting area: <Select entities>: Press Enter Subtracting: Entity ? Add ? <First point>: Choose Done 