Odpowiedzi

2010-04-14T19:33:41+02:00
1) 500dm-50000mm
200cm-2000mm
Ppp=50000mm*2mm*2000mm=200000000mmkwadrat=2000000cmkwad=20000dmkwadr=200m kwadr.
2)1dm-100mm
100cm-1000mm
Ppp=100mm*1000mm*2mm=200000mmkwadr=20dm kwadr
2010-04-14T19:42:59+02:00
1)
5dm = 50cm
2mm = 0,2cm
200cm

Pc = 2Pp + Pb

Pp = 50cm x 0,2cm = 10cm2
Pb = 2 x 0,2cm x 200cm + 2 x 50cm x 200cm = 80cm2 + 20000cm2 = 20080cm2

Pc = 2 x 10cm2 + 20080cm2 = 20cm2 + 20080cm2 = 20100cm2

2)
1dm = 10cm
2mm = 0,2cm
100cm

Pp = 10cm x 0,2cm = 2cm2
Pb = 2 x 0,2cm x 100cm + 2 x 10cm x 100cm = 40cm2 + 2000cm2 = 2040cm2

Pc = 2 x 2cm2 + 2040cm2 = 4cm2 + 2040cm2 = 2044cm2