Question

Calculaţi perimetrul triunghiului care are lungimile laturilor de:
a) 5 cm; 8 cm; 10 cm;
b) 4,2 m; 5,12 m; 6,312 m;
c) 20 dm; 10 m; 0,11 hm.
Urgentttt cn rs primul are coroană​

Answer 1

Răspuns:

a) P=5+8+10=23cm

b) P=4.2+5.12+6.312=15.632m

c) 20dm=200cm

10m=1000cm

0.11hm=1100cm

=>P=200+1000+1100=2300cm

Answer 2

Răspuns:

p=l+l+l

a)5+8+10=23cm

b)4,2+5,12+6,312(stim ca 1m=100cm)

6,312m

312cm=300cm+12cm;1m=100cm

300cm=3m

6,312m=600+312=912cm=9,12m

perimetru =4,2+5,12+9,12=18,44m

c)1m=10dm;20dm=2m

1hm=100m;0,11hm=11m

perimetru=2+10+11=23m

Explicație pas cu pas: