Odpowiedzi

2010-01-17T12:51:29+01:00
2010-01-17T12:57:20+01:00
Pp= 3x10=30cm^2
V=PpxH=30x15=450cm^3

Pś1= 3x15=45cm^2
Pś2=10x15cm^2=150cm^2
Pb= 2XPś1+2xPś2=2x45+2x150=90+300=390cm^2
Ppc=2xPp+Pb=2x30+390=60+390=450cm^2
2010-01-17T13:52:26+01:00
Pp= 3 * 10 = 30cm2

V=Pp * h = 30 * 15=450cm3

Pś1 = 3 * 15 = 45cm2

Pś2 = 10 * 15 = 150cm2

Pb = 2 * Pś1 + 2 * Pś2 = 2 * 45cm2 + 2 * 150 = 90 + 300 = 390cm2

Ppc = 2 * Pp + Pb = 2 * 30 + 390 = 60 + 390 = 450cm2