,LESSON #D3 ,=MATT+
      ,SPATIAL ,MAT]IALS &
    ,NUMB] ,L9ES = ,/UD5TS 9
         ,GRADES #B-#E

    ,ACTIV;Y #D,B

      ,FUN ) ,NUMB] ,L9ES

#A4 ,:AT IS ! VALUE ( ! PR9T ON
  EA* NUMB] L9E8 _%

                    =
[3333R3333R3333R3333R3333R3333O
     60   62   64   66   68

_:







                              #A
    ,ACTIV;Y #D,C ,ANSW] ,KEY

      ,TRUE OR ,FALSE

    ,DECIDE IF EA* ANSW] IS TRUE
  OR N4 ,IF X IS FALSE1 WRITE !
  CORRECT ANSW]4

,EXAMPLE3 _%

 2.7
 @*3
33333
  81

_:
,FALSE ,- ,! ANSW] IS _% #8.1

#1_4   35.8   #2_4   60.25
        @*6            @*9
     3333333       33333333
      215.8         542.25

_:
                              #B