Oblicz dlugosc okregu i pole kola o srednicy:
a) 14 m
b) 12 m
P = πr²
l = 2πr
a) 14m = 2r r=7
P = 7²π
P = 49π
l = 14π
b) 12m = 2r r=6
P = 6²π
P= 36π
l= 12π
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P = πr²
l = 2πr
a) 14m = 2r r=7
P = 7²π
P = 49π
l = 14π
b) 12m = 2r r=6
P = 6²π
P= 36π
l= 12π