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H=8
Pp= 8×8= 64
Pśb=½ a×h
h²=4²+8²
h=2√10
Pśb=8√10
V= ⅓ Pp×H
V= -⅓ 64×8
V= 512/3
Pc= Pp+ 4×Pśb
Pc= 64+ 4×8√10
Pc= 64+ 32√10
Pc= 32(1+√10)