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1 s=1/60 min 1/12 s= 1/12*1/60=1/720 min
0,(7) doby=x s
0,(7)=7/9
doba= 24*60*60=86 400 s 7/9 doby= (7/9)*86400=67200 s
0,13 h=x tyg
1 tydz= 7*24=168 h
0,13 h= 0,13*168=21,84 h
12 km= x mm
1 km=1000 m=10^6 mm; 12 km= 12*10^6 mm
3/4 dm=x m
1 dm=0,1 m ;3/4 dm= 0,75*0,1=0,075 m
1 m=0,001 km
13 m/s=x km/h
1 m/s=0,001 km/(1/3600)h=3,6 km/h
13 m/s= 13*3,6=46,8 km/h
0,5 m/min=x dm/s
1 m/min= 10 dm/60 s= 1/6 dm/s 0,5 m/min= 0,5*1/6=5/60 dm/s
123 m^2=x cm^2
1 m^2= 100*100=10 000 cm^2
123 m^2= 123*10000=1230000 cm^2
2 km^2=x ha ;1 ha= 100*100 m^2; 1 km^2= 10*10 ha=100 ha
2 km^2= 2*100=200 ha
0,25 ha=x cm^2 ;1 ha= 100*100 m^2=100*100*100*100 cm^2=10^8 cm^2
0,25 ha= 0,25*10^8=25 000 000 cm^2
3l=x mm^3; 1 l=1 dm^3= 10^3 cm^3=10^3*10^3 mm^3=10^6 mm^3
3 l=3*10^6 mm^3
12 hl=x km^3; 1 hl=100 dm^3=100*0,1^3 m^3=0,1 m^3= 0,1*0,001^3 km^3=0,1*10^-9 km^3=10^-10 km^3 12 hl=12*10^-10 km^3=1,2*10^-9 km^3
1 m^3=x l
1 l=1 dm^3
1 m^3=10^3 l=1000 l
1/3 kg=x g
1 kg=1000 g
1/3 kg= 1000/3=333,(3) g
90 t=x dag
1 t=1000 kg=1000*100 dag=10^5 dag
90 t= 90*10^5=9*10^6 dag
333 mg=x
kg 1 mg= 1/1000 kg=10^-3 kg
333 mg= 333*10^-3=0,333 kg
0,2 kg/m^3= x g/cm^3
1 kg/m^3= 1000 g/100^3 cm^3=10^3 g/10^6 cm^3=10^-3 g/cm^3 0,2 kg/m^3= 0,2*10^-3=2*10^-4 g/cm^3
17 dag/l=x kg/mm^3
1 dag/l=0,01 kg/100^3 mm^3= 10^-2*10^-5 kg/mm^3=10^-7 kg/mm^3
17 dag/l= 17*10^-7=1,7*10^-6 kg/mm^3