a) Oblicz pola i obwody kół o promieniach: 2 , /frac{1}{3} , /sqrt{5} , /pi{2}
b) Oblicz pola i obwody kół o srednicach: 6 , 1 , /sqrt{2} , /pi
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a) wzór l=2πr
obwody
r=2
l=2×π×2
l=4π
r=1/3
l=2× π×1/3
l=2/3π
r=√5
l=2√5π
r=2π
l=2π×2π
l=4π²
pole=πr²
P=4π
P=1/9π
P=5π
P=4π³
b)
wzór
l=dπ
d=6
l=6π
d=1
l=π
d=√2
l=√2π
d=π
l=π²
pole=πr²
P=9π
P=1/4π
P=1/2π
P=π³/4