\(A:\)
\(12km=12000m\)
\(3,5km=3500m\)
\(500m=0,5km\)
\(2,5m=2,5\cdot10^{-3}km\)
\(400cm=4m\)
\(90cm=0,9m\)
\(750mm=0,75m\)
\(6dm=0,6m\)
\(8cm=8\cdot10^{-5}km\)
\(1,5km=1500m\)
\(B:\)
\(1,5h=90p\)
\(2h20p=140p\)
\(1h30p=5400s\)
\(15p=900s\)
\(30p=1800s\)
\(600s=\dfrac{1}{6}h\)
\(10p20s=620s\)
\(30s=\dfrac{1}{120}h\)
\(25p=1500s\)
\(1h10p=4200s\)
\(C:\)
\(2m^2=20000cm^2\)
\(8dm^2=8000cm^2\)
\(5dm^2=50000mm^2\)
\(2,5cm^2=2500mm^2\)
\(150cm^2=150000mm^2\)
\(4cm^2=4\cdot10^{-4}m^2\)
\(30dm^2=0,03m^2\)
\(D:\)
\(5kV=5000V\)
\(360V=0,36kV\)
\(200mV=0,2V\)
\(12,8V=12800mV\)
\(2,5A=2500mA\)
\(500mA=0,5A\)
\(90mA=0,09A\)
