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24π = 2πr / π
24 = 2r / : 2
r = 12
Pole koła to = πr², to:
r = 12
P = π12²
P = 144π
24 pi= 2 pi r /: pi
24= 2r /:2
r= 12
P= pi*r kwadrat
P= 12 kwadrat * pi
P= 144 pi