Odpowiedzi

2010-03-03T12:05:32+01:00
A)
Pc=π*2²+2²*2*5+2²*4*5+π*4²+π*4²-π*2²
Pc=4π+20π+40π+16π+16π-4π
Pc=92π
b)
Pc=π*3²+π*2²+π*5²+π*5²-π*3²-π*2²+2π*3*10+2π*2*4+2π*5*3
Pc=50π+106π
Pc=156π
c)π*3²+π*3²+1/2*2π*3*6+2π*3*3
Pc=54π