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2010-04-10T19:53:14+02:00
Pp=5² = 25 cm²
Pb = 5cm * 2cm = 10cm²
Pc=2Pp + 4Pb
Pc= 25cm² * 2 + 4 * 10cm² = 50cm² + 40cm² = 90cm²

krawedz podst = √64cm²
krawedz podst = 8cm
Pb = 8cm * 10cm = 80cm²
Pc=2Pp + 4Pb
Pc= 2 * 64cm² + 4 * 80cm² = 128cm² + 320cm²
=448 cm²

Pp= a²√3/4 Pp= 2²√3/4 Pp= 4√3/4 = √3 cm ²
Pb = 5cm * 2cm = 10cm²
Pc=2Pp + 3Pb
Pc= 2 * √3cm² + 3 * 10 cm² = 2√3cm² + 30cm²

krawedz podst = 27cm²:3cm = 9cm
Pp= a²√3/4
Pp= 9²√3/4 = 81√3/4 = 20.25√3 cm²
Pc=2Pp + 3Pb
Pc = 2 * 20.25√3 cm² + 3 * 27cm²
= 40.5√3 cm² + 81cm²

Pp=6a²√3/4
Pp= 24√3/4 cm² = 6√3cm²
Pb= 2cm * 1cm = 2cm²
Pc = 2Pp + 6Pb
Pc = 2 * 6√3cm² + 6 * 2cm²
=12√3cm² + 12cm²

krawedz podst = 50cm²:2 = 25cm²
Pp =