a) 450 cm² = 450 * 1 cm * 1 cm = ...................................................................................... b) 50 cm² = ...................................................................................................................... c) 0,2 km² = .....................................................................................................................
=450*0,01m*0,01m=0,045m²
b)50cm²=50*1cm*1cm=50*0,01m*0,01m=
=0,005m²
c)0,2km²=0,2*1km*1km=
=0,1*1000m*1000m=200000m²
za błędy przepraszam