Oblicz obwód równoległoboku o bokach długości:
6cm i 15cm
2cm8mm i 4cm6mm
8m i 20dm
Obw.=2a+2b
Obw.=2*6+2*15=12+30=42cm
2cm 8mm=2,8cm
4 cm 6mm=4,6cm
Obw.=2*2,8+2*4,6=5,6+9,2=14,8cm
20dm=2m
Obw.=2*2+2*8=4+16=20m
2*6+2*15=12+30=42cm
2*2,8+2*4,6=5,6+9,2=14,8cm
2*8m+2*2m=16m+4m=20m
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Obw.=2a+2b
Obw.=2*6+2*15=12+30=42cm
2cm 8mm=2,8cm
4 cm 6mm=4,6cm
Obw.=2*2,8+2*4,6=5,6+9,2=14,8cm
20dm=2m
Obw.=2*2+2*8=4+16=20m
2*6+2*15=12+30=42cm
2*2,8+2*4,6=5,6+9,2=14,8cm
2*8m+2*2m=16m+4m=20m