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Pc=150π
Pc=2πr²+2πrh
150π=2πr²+2πr·2r /:π
150=2r²+4r²
150=6r² /;6
r²=25
r=√25=5 cm--->promien walca
to h=2·5=10cm --->wysokosc walca
objetosc bryły
V=Pp·h=5²π·10=25π·10=250π [ j³ ]