👤

ex 1 va rog si 2,8 foarte mult

Ex 1 Va Rog Si 28 Foarte Mult class=

Răspuns :

faci ABCD CU LATURA DE 6L
L=6 l=4
p=2L+2l
p=2×6+2×4=20
b) p=30
L=2l p=2×2l +2l
30=6l l=30:6=5 L=2×5=10
c) L=8 l=1/4L l=8:4×1=2
p=2×8+2×2=20
2) L=414 l=2/3L l=414:3×2=138×2=276
p=2×414+2×276=828+552=1380
8) L=402 l=1/6L l=402:6×1=67
p=2×402+2×67=804+134=938
p1=938:3=312,2