Odpowiedzi

2010-01-28T12:42:35+01:00
1, Pp = 8dm × 6 dm ÷ 2= 24 dm²
Pb = 5 dm x 7 dm x 4 = 140 dm²
Pc = 2 x 24 dm² + 140 dm² = 188 dm²

Pp = jak wyżej :)
h = 7 dm
V = 24 dm² x 7 dm = 168 dm³


2, Pp = 80cm × 60 cm ÷ 2 = 240 cm²
Pb = 50 cm x 12 cm x 4 = 2400 cm²
Pc = 2 x 240 cm² + 2400 cm² = 2880 cm²

Pp = j.w. :)
h = 12 cm
V = 240 cm² x 12 cm = 2880 cm³

powinno być dobrze :)