Obwód koła o polu cm^2 jest równy
P=πr²
625π=πr²
r=25[cm]
L=2πr
L=2π*25cm
L=50πcm
P=625π ²cm
πr²=625π
r²=625
l=2πr=2π*25=50π[cm]
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P=πr²
625π=πr²
r=25[cm]
L=2πr
L=2π*25cm
L=50πcm
P=625π ²cm
πr²=625π
r²=625
r=25[cm]
l=2πr=2π*25=50π[cm]