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  rob 8.11.2010 (20:41)

  1)
  a)
  1 dm^2=100cm^2
  4 dm^2=x cm^2
  x=4*100= 400cm^2
  
  1 dm^2=100cm^2
  15 dm^2=x cm^2
  x=15*100=1500cm^2
  
  1 dm^2=100cm^2
  120 dm^2=x cm^2
  x=120*100=12000cm^2
  
  1 dm^2=100cm^2
  1,4dm^2=xcm^2
  x=1,4*100=140cm^2
  
  b)
  1a=100m^2
  1m^2=10000cm^2
  100m^2=x cm^2
  x=1000000cm^2 =10^6 cm^2
  czyli (^ oznacza potęgę)
  
  1a=1000000cm^2=10^6 cm^2
  5a=x cm^2
  x=5*10^6 cm^2
  
  1a=10^6cm^2
  12,5 a= x cm^2
  x=12,5*10^6 cm^2
  
  1ha=10^8cm^2
  13a=x cm^2
  x=13*10^8 cm^2
  
  1a=10^6cm^2
  18,3 a = x cm^2
  x=18,3*10^6 cm^2
  
  c)
  1m^2=10000 cm^2=10^4 cm^2
  
  1m^2 = 10^4 cm^2
  43 m^2= x cm^2
  x=43*10^4 cm^2
  
  1m^2 = 10^4 cm^2
  1670 m^2 = x cm^2
  x=1670*10^4 cm^2
  
  1ha=100a=10000m^2
  
  1m^2 = 10000cm^2
  10000m^2=x cm^2
  x=10000*10000=100000000=10^8 cm^2
  
  1 ha= 10^8cm^2
  0,35 ha= x cm^2
  x=0,35*10^8 cm^2
  
  
  1 ha= 10^8cm^2
  1000 ha= x cm^2
  x=10^3 * 10^8=10^11 cm^2
  
  d)
  1a=10^6cm^2
  210 a = x cm^2
  x=210*10^6 cm^2
  
  1m^2 = 10^4 cm^2
  427805 m^2=x cm^2
  x=427805*10^4 cm^2
  
  1 km^2=1000000 m^2=10^6 m^2
  
  1 m^2=10^4 cm^2
  10^6 m^2= x cm^2
  x=10^6 * 10^4=10^10 cm^2
  
  1 km^2=10^10 cm^2
  5260597 km^2=x cm^2
  x=5260597*10^10 cm^2
  
  320000000cm^2= 32*10^7 cm^2

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