Odpowiedź :
Pp = (4,5cm)² = 20,25cm²
h = V/Pp = 81cm³/20,25cm² = 4cm
P = 2Pp + Pb = 2·4,5cm·4,5cm + 4·4,5cm·4cm = 40,5cm² + 72cm² = 112,5cm²
Pp = (4,5cm)² = 20,25cm²
h = V/Pp = 81cm³/20,25cm² = 4cm
P = 2Pp + Pb = 2·4,5cm·4,5cm + 4·4,5cm·4cm = 40,5cm² + 72cm² = 112,5cm²