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1,2πcm=2πr /2π
0,6cm=r (promień koła)
0,8πcm=2πr /2π
0,4πcm=r (promień koła)
Pole koła: P=πr2(r do kwadratu)
P=0,6cm * 0,6cm * π
P=0,36πcm2(cm kwadratowych)
P=0,4cm * 0,4cm * π
P=0,16πcm2(cm kwadratowych)