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3 si 4 ,va rog e URGENTTTT!

3 Si 4 Va Rog E URGENTTTT class=

Răspuns :

3 ) notam paralelipipedul ABCDA'B'C'D'
AB=DC=A'B'=D'C' =3 cm
diagonalele √(3²+4²+5²)=5√2


l+L+h=96:4=24 (pt ca avem cate 4 muchii de fiecare fel)
a) L=8
l=6
h=24-8-6=10
d=√(6²+8²+10²)=10√2

b) L/5=l/3=h/4= (L+l+h)/(5+3+4)=24/12=2 (=k)
L=5*2=10
l=3*2=6
h=4*2=8

d= √(10²+6²+8²)=10√2