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- ****** AUTOMATIC CALCULATION OF AREA & PERIMETER *******
-
- THIS FUNCTION CALCULATES THE AREA & PERIMETER OF ONE OR MORE
- GROUPS AT A TOUCH. IT ALSO ADDS & SUBTRACTS ENCLOSURES.
- LET US DRAW SOME ENCLOSURES.
- <end>
- PRESS "1" FOR THE GROUPS AREA MENU.
- SELECT "AREA-PERIM." FROM THE MENU.
- <end>
- THE AREA & PERIMETER ARE CALCULATED ACCORDING TO THE UNITS
- OF MEASURE AS INDICATED ON THE STATUS LINE. THE UNIT OF
- MEASURE CAN BE CHANGED USING THE "COORDINATE" FUNCTION OF
- THE CONSTRUCTION AREA.
- NOW SELECT THE FIRST GROUP.
- <end>
- THERE ARE FOUR NUMBER DISPLAYED ON THE DATA LINE ABOVE.
- THE FIRST & THE THIRD NUMBERS DIPLAY THE THE AREA & THE
- PERIMETER OF THE SELECTED GROUP. THE SECOND AND THE
- FOURTH NUMBERS DISPLAY THE TOTALS OF THE AREA AND PERI-
- METER OF ALL GROUPS SELECTED.
- NOW SELECT THE SECOND GROUP.
- <end>
- AGAIN THE FIRST & THE THIRD NUMBERS ARE THE AREA & THE
- PERIMETER WHILE THE SECOND & THE FOURTH NUMBERS ARE THE
- ACCUMULATIVE TOTALS OF THE AREA(S) & THE PERIMETER(S).
- <end>
- SELECT THE SUBMENU FUNCTIONS "AREA-" & "PERM-" TO SUBTRACT
- THE AREA & THE PERIMETER OF THE THIRD GROUP FROM THE TOTAL.
- <end>
- SELECT THE THIRD GROUP.
- <end>
- AS USUAL THE FIRST & THIRD NUMBERS ARE THE AREA & PERIMETER
- OF THE THIRD GROUP. THE SECOND & FOURTH NUMBERS ARE THE
- ACCUMULATIVE TOTALS.
- <end>
- *********************** END OF LESSON ******************
- <end>