Odpowiedzi

2010-02-09T15:02:02+01:00
14dm=140cm

a) 2x60cm + 2x 140cm = 300cm = 3m

b)100x2 + 2x 140cm = 480 cm = 4,8m
2010-02-09T15:02:19+01:00
60cm+140cm×2
100cm+140cm×2
2010-02-09T15:02:38+01:00
2*(6+14)=40dm
2*(10+14)=48dm
40dm+48dm=88dm.=8,8m