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calculati perimetrul unui triunghi ABC care are:

a)AB=20mm,BC=1,2cm,AC=0,1dm
b)AB=21m,BC=1300 cm,AC0,1hm

c)AB=0,25hm,BC=3,10dam,AC=12m

d)Ab=2,8dam,BC=11,5m,AC1550cm

alt ex

transformati in dm

2800cm,,18 dam,,3m,,2,5km,,920000,,19hm dau coroana pls ajutorrr

Răspuns :

Dark3Angel
a) BC=1,2 cm= 12 mm
AC=0,1 dm=100 mm
P= AB+BC+AC= 20 mm+12mm +100mm=132mm=0,132m

b)BC=1300 cm=13 m
AC=0,1 hm= 10 m
P= 13m+10m+21m=44m

c) AB=25m
BC=31m
P= 12m+25m+31m=68m

d)AB=280dm
BC=130 dm
AC=155dm
P=280 dm+130dm+155dm=565dm=56,5m

Celalat exercitiu:
2800cm=280dm
18dam=1800dm
3m=30dm
2,5km=25000dm
19hm=19000dm

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