Question

calculati permetrul unui triunghi ABC,cand:AB=0,5dam;BC=30dm;AC=4,2m

Answer 1

PΔABC = AB + BC  + AC

= 0,5 dam + 30 dm + 4,2 m

= 5 m + 3 m + 4,2 m

= 12,2 m

Answer 2

AB=0,5dam=5m
BC=30dm=3m
AC=4,2m

P=AB+BC+AC
P=5m+3m+4,2m
P=8m+4,2m
P=12,2m



1000mm=100cm=10dm=1m=0,1dam=0,01hm=0,001km

1km=10hm=100dam=1000m=10.000dm=100.000cm=1.000.000mm