Odpowiedzi

2010-03-07T11:12:26+01:00
2*1,40+2*1,60+2*1,40+2*0,80=2,80+3,20+2,80+1,60=10,40 m
2010-03-07T11:13:30+01:00
1,40m+1,40m=2,80m
1,60m+1,60m=3,20m
1,40m=1,40m=2,80m
0,80m+0,80m=1,60m

2,8+3,2+2,8+1.6=10,40m

odp. trzeba kupić 10,40m taśmy
1 5 1
2010-03-07T11:14:14+01:00
(2*140cm + 2*160cm)+(2*140cm+2*80cm) =
(280cm+320cm)+(280cm+160cm)=
600cm+440cm=1040cm
1040cm=10,4m