We are going to apply several commands presented in this chapter to a metal plate with several bolts:
Open the drawing
EXERCISE-CH5-START.DWG
.Measure the diameter of the outer circle, by applying the
GETDISTANCE
command (aliasDI
) and selecting two opposite quadrants. Result should be200
. Another possibility could be applying theGETPROPERTIES
command (aliasLI
).Select, without command, the inner circle. Apply the
PROPERTIES
palette (Ctrl + 1) and modify the radius to30
.We want the area of the metal plate, that is, between the outer and inner circles. Apply the
GETAREA
command (aliasAA
), set the Add option, Entity option and select the outer circle. The command displays:Area = 31415.927, Perimeter = 628.319, Total area = 31415.927
. Press Enter to exit entity selection, set the Subtract option, Entity option and select the inner circle. The command displays:Area = 2827.433, Perimeter = 188.496, Total area = 28588.493
. Press Enter twice to exit the command.Select, without...