Răspuns:
I. (cub)
V=a³
V=9*9*9=729 cm³
A=a²
A=9,9=81 cm²
P=6*a²
P=6*81=486 cm²
II. (cuboid)
V=a*b*h
V=12*15*8,5=1530 cm³
A=a²+b²+h²
A=144+225+72,25=441,25 cm²
P=2*a*b+2*b,h+2*a*h
P=2*12*15+2*15*8,5+2*12*8,5=360+225+204=789 cm²
Bafta mai departe!!! ₽_₽
Coronița te rog...!!!! &_&
