Odpowiedzi

2010-03-24T17:37:58+01:00
V = Pp * H
Pp = 4cm * 4 cm = 16 cm2

80 cm3 = 16 cm2 * H
H = 80 cm3 : 16 cm2 = 5 cm


Pc = 2 * Pp + Pb
Pb = 4 * (4cm * 5 cm) = 4 * 20 cm2 = 80 cm2
Pc = 2 * 16 cm2 + 80 cm2 = 32 cm2 + 80 cm2 = 112 cm2

Naj ?
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2010-03-24T17:43:00+01:00
4cm * 4cm = 16cm²
80cm³ : 16cm² = 5cm
Pp = 2 * (4cm * 4cm) + 4 * (4cm * 5cm)
Pp = 2 * 16cm² + 4 * 20cm²
Pp = 32cm² + 80cm²
Pp = 112cm²
odp: Pole powierzchni wynosi 112cm²
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