2 2
3 = S = π r = π 3 = 9 π ≈ 28.274328 = 28
9 = S = π r = π 9 = 81 π ≈ 254.468952 =254
254:28= 9,071428571428571 = 9
2 квадрат
2 2
3 = S = π r = π 3 = 9 π ≈ 28.274328 = 28
2 2
9 = S = π r = π 9 = 81 π ≈ 254.468952 =254
254:28= 9,071428571428571 = 9
2 квадрат