a) π/2 ≈ 3,142/2 ≈ 1,571 ≈ 1,57
б) 3/4 · π ≈ 3/4 · 3,142 ≈ 2,3565 ≈ 2,36
в) π/3 ≈ 3,142/3 ≈ 1,047 ≈ 1,05
a) π/2 ≈ 3,142/2 ≈ 1,571 ≈ 1,57
б) 3/4 · π ≈ 3/4 · 3,142 ≈ 2,3565 ≈ 2,36
в) π/3 ≈ 3,142/3 ≈ 1,047 ≈ 1,05