Odpowiedzi

2010-01-13T16:43:08+01:00
2010-01-13T16:46:43+01:00
1h- 1,2cm
a) 25min

1h=60min

60min- 1,2cm
25min- x

x=1,2*25/60
x=0,5cm

b) 40min

60min-1,2cm
40min-x
x=40*1,2/60
x=0,8cm

c) 45min
60min-1,2cm
45min-x
x=45*1,2/60
x=0,9cm
12 4 12