1)(радиус=2)
P = 2 π r = 2 π 2 = 4 π ≈ 12.566368
2)(радиус=6)
P = 2 π r = 2 π 6 = 12 π ≈ 37.699104
3)(диаметр=8)
P = π d = 8 π ≈ 25.132736
4)(диаметр=0,6)
5)и 6) диаметр и радиус
d = C/π R=D/2
9,42/3,14=3 3/2=1,5
21,98/3,14=7 7/5=3,5
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Answers & Comments
1)(радиус=2)
P = 2 π r = 2 π 2 = 4 π ≈ 12.566368
2)(радиус=6)
P = 2 π r = 2 π 6 = 12 π ≈ 37.699104
3)(диаметр=8)
P = π d = 8 π ≈ 25.132736
4)(диаметр=0,6)
5)и 6) диаметр и радиус
d = C/π R=D/2
9,42/3,14=3 3/2=1,5
21,98/3,14=7 7/5=3,5