Question

Va rog e urgen!!Dau coroana!​

Answer 1

Răspuns:

a)33cm;

b)46cm;

c)27cm;

d)30cm;

Explicație pas cu pas:

a)P=3l. P=11×3=33cm;

b)P=2L+l=> P=19×2+8=46cm;

c)P=8+9+10=27cm; (numerele consecutive sunt 8,9,10).

d)P=5+12+13=30cm;