Odpowiedź:
d - średnica okręgu
P - pole koła = πd²/4 = 81π
πd²/4 = 81π
πd² = 4 * 81π = 324π | : π
d² = 324
d = √324 = 18 [j]
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Odpowiedź:
d - średnica okręgu
P - pole koła = πd²/4 = 81π
πd²/4 = 81π
πd² = 4 * 81π = 324π | : π
d² = 324
d = √324 = 18 [j]