Odpowiedzi

2010-04-06T18:03:41+02:00
V = 5dm*5dm*25cm
V = 5dm*5dm*2,5dm
V = 62,5dm³

Pc = 2*5dm*5dm+4*5dm*25cm
Pc = 50dm²+20dm*2,5dm
Pc = 50dm²+50dm²
Pc = 100dm²
2010-04-06T18:09:00+02:00
Dane:
a=5
h=25
szukane:
v=?
Pc=?
v= Pp*h
Pp=a²=5²=25
v=25 * 25=625
Pc=2 * Pp + Pb
Pb= 4 * a * h
Pb= 4* 5*25= 4*125=500
Pc= 2 * 25 + 500= 2* 525=1050