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2010-04-07T19:35:15+02:00
Pc=Pp+Pb=25π+50π=75π
Pp=πr²=π5²=25π
Pb=πrl=π5*10=50π
1 5 1
2010-04-07T19:38:07+02:00
Pb = π*r*l
Pb= π*5*10
Pb= 50 π
Pp= π*r²
Pp= π*5²
Pp= 25 π
Pp + Pb = Pc
Pc = 25π + 50 π
Pc = 75 π
odp. pole całkowite wynosi 75 π