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r=O/(2π)
r=1,7π/(2π)=0,85 dm=8,5cm promień
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P=πr²
r²=P/π
r²=2,25/π
r=√2,25/√π
r=1,5/√π cm
d=2*1,5/√π
d=3/√π cm średnica
P=πr^2
a)
1,7π = 2πr
0,85dm = r
b)2,25 π= πr^2
2,25cm = srednica
Sorki ze tak dlugo