Jak zrobić takie zadanie: Oblicz ile wynosi pole koła o średnicy 20cm
d= 20 cm
r=0,5d = 10 cm
P=π*10²=100π≈100 * 3,14 = 314 cm²
d=20cm
r=20:2=10cm
P=πr²
P=10²π=100π
π=3,14
P=3,14*100=314cm²
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d= 20 cm
r=0,5d = 10 cm
P=π*10²=100π≈100 * 3,14 = 314 cm²
d=20cm
r=20:2=10cm
P=πr²
P=10²π=100π
π=3,14
P=3,14*100=314cm²