Oblicz pole całkowite i objętość walca o wysokości 10 cm i polu bocznym 60 (pi)
Pb=60π
wysokosc walca H=10cm
2πrH=60π
2πr·10=60π
20rπ =60π /:20π
r=3cm
Pc=2Pp+Pb=2πr²+60π=2π·3²+60π=18π+60π=78πcm²
V=Pp·H=π·3²·10=90πcm³
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Pb=60π
wysokosc walca H=10cm
2πrH=60π
2πr·10=60π
20rπ =60π /:20π
r=3cm
Pc=2Pp+Pb=2πr²+60π=2π·3²+60π=18π+60π=78πcm²
V=Pp·H=π·3²·10=90πcm³