球的表面积

GeoGebra 命令及参数

1. Intersect(circle, l_5, 1) → B
2. Circle(B, (π / 2 * radius)) → c_1
3. Intersect(c_1, l_5, 1) → L
4. Segment(L, B) → o
5. Intersect(xAxis, yAxis) → A
6. Circle(A, o) → c_2
7. Intersect(c_2, yAxis, 2) → D
8. Segment(A, D) → p_2
9. Circle(B, Radius[circle]) → c_3
10. Intersect(circle, p_2, 1) → F
11. Intersect(circle, yAxis, 1) → G
12. OrthogonalLine(F, p_2) → l_3
13. OrthogonalLine(G, yAxis) → l_1
14. Intersect(l_4, l_3) → I
15. Intersect(l_4, l_1) → J
16. Intersect(l_2, l_1) → K
17. Intersect(l_2, l_3) → H
18. Polygon(J, K, H, I) → poly1, n, l, k, m
19. Segment(A, F) → p
20. Segment(A, B) → u_1
21. Intersect(m, xAxis) → E
22. Intersect(l, xAxis) → C
23. Sphere(B_1, A_1) → o_1
24. Sequence((radius * cos((π * w / ((2 * b))))), w, 0, b) → list3
25. Sequence(((Element[list3, w] * π), (p_2 * (w - 1) / b)), w, 1, b) → list4
26. Sequence((0, (p_2 * t / b)), t, 0, b, 1) → list1
27. Sequence((0, (p * t / b)), t, 0, b, 1) → list2
28. Sequence(Segment[Element[list1, u], Point[Circle[Element[list1, u], Element[list4, u]]]], u, 1, b) → list5
29. Polygon(F, H, C, A) → poly3, f, h, e, d
30. Point(list4) → N
31. Point(list4) → O
32. Point(list4) → P
33. Point(list4) → Q
34. Point(list4) → R
35. Point(list4) → S
36. Point(list4) → T
37. Point(list4) → U
38. Point(list4) → V
39. Point(list4) → W
40. Point(list4) → Z
41. Point(list4) → C_1
42. Point(list4) → D_1
43. Point(list4) → E_1
44. Point(list4) → F_1
45. Point(list4) → G_1
46. Point(list4) → H_1
47. Point(list4) → I_1
48. Point(list4) → J_1
49. Point(list4) → K_1
50. Point(list1) → L_1
51. Point(list1) → M_1
52. Polygon(N, O, Z, C_1, D_1, E_1, F_1, G_1, H_1, I_1, J_1, K_1, P, L_1, M_1, Q, R, S, T, U, V, W) → poly2, n_1, w, z_1, c_4, d_1, e_1, f_1, g_1, h_1, i_1, j_1, o_2, k_1, l_6, m_1, p_1, q, r, s, t, u, v