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To calculate the area of the gasket using the Area command, first add the area of the entire gasket ( A ), and then subtract the areas of the two circles ( B and C ). |
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 window 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