Oblicz promień koła, którego pole wynosi 20 cm². Wynik zaokrąglij do setneych części centymetra.
P=20cm²
P=πr²
πr²=20cm²|:π
r²≈6,37cm²
r≈√6,37cm²
r≈2,524cm
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P=20cm²
P=πr²
πr²=20cm²|:π
r²≈6,37cm²
r≈√6,37cm²
r≈2,524cm