Question

buna ,cine ma poate ajuta la geometrie ,ca imi da mare batai de cap ?.38,39 Va rog !!!!

Answer 1

38.
a)V=125cm^3
V=l^3
l=5
Aria totala=6l^2
Aria totala=900cm^3
b)V piramidei = Ab*h supra 3 
V=25*5 supra 3
V=125 supra 3 =41.(6)
39.
a)At=2(L*l+L*h+l*h)
At=2(2*(2*2radical3+2*2+2*2radical3)
At=2(4radical3+4+4radical3)
At=2(8radical3+4)
At=16radical3+8
b)V=L*l*h
V=2*2radical3*2
V=8radical3cm^3