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P - pole = 81π
81π = πr²
r² = 81π/π = 81
r = √81 = 9
małe koło
P - pole = 25π
25π = πr²
r = 25π/π = 25
r = √25 = 5
tak, ponieważ s małego koła (d = 2r = 2 * 5 = 10) jest większa od promienia dużego koła (9)
10 > 9