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a=12m
b=5m
a=3dm=0.3m
b=200dm
a=20km=20000m
b=0.003m
a=2mm=0.002m
b=30000m
a = 12 m
12*b=60
60/12=5
12*5=60
b=60
P(prostokąta) = a*b
a=3dm = 0,3 m
0,3*b=60
60/0,3=200
b=200
P(prostokąta) = a*b
a=20 km = 20000 m
20000 *b = 60
60\20000=0,003
b=0,003
P(prostokąta)=a*b
a=2mm=0,2cm=0,002m
0,002m*b=60
60\0,002m = 30000
b=30000
p = a*b
a.) 60:12 = 5m
b.) 3dm = 0,3m
60:0,3 = 200m
c.) 20km = 20000m
60:20000 = 0,003m
d.) 2mm = 0,02m
60:0,02 = 3000m