Surface Area and Volume Relationships

Surface Area and Volume Relationships
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2017-05-11 01:15
This example demonstrates the relationship between surface area and volume. It involves core concepts of geometry and solid geometry. Using GeoGebra commands such as Segment, OrthogonalLine, Rotate, etc., various geometric shapes such as cylinders and cones can be constructed. Suitable for high school students and teachers.

GeoGebra Commands & Parameters

  1. Segment((0, 0), (0, 1)) → a
  2. OrthogonalLine(A, a) → b
  3. Point(b) → B
  4. Segment(A, B) → c
  5. Circle(C, c) → d
  6. Point(d) → D
  7. Segment(C, D) → e
  8. Rotate(D, -90°, C) → D'
  9. Angle(D', C, D) → α
  10. OrthogonalLine(D, e) → f
  11. OrthogonalLine(C, e) → g
  12. OrthogonalLine(D', g) → h
  13. Segment(C, D') → i
  14. Intersect(h, f) → E
  15. Segment(D', E) → j
  16. Segment(D, E) → k
  17. Circle(D', 36 / c^(2)) → p
  18. Intersect(p, g) → G, H
  19. Segment(D', G) → l
  20. OrthogonalLine(G, g) → m
  21. Intersect(m, f) → F
  22. Segment(G, F) → n
  23. Segment(F, E) → q
  24. Circle(E, c) → r
  25. OrthogonalLine(E, q) → s
  26. Intersect(r, s) → I, J
  27. Segment(E, I) → t
  28. OrthogonalLine(I, s) → a_1
  29. Intersect(m, a_1) → K
  30. Segment(F, K) → b_1
  31. Segment(I, K) → c_1
  32. Circle(G, c) → d_1
  33. Intersect(d_1, g) → L, M
  34. OrthogonalLine(L, g) → e_1
  35. Segment(G, L) → f_1
  36. Intersect(e_1, f) → N
  37. Segment(L, N) → g_1
  38. Segment(N, F) → h_1
  39. Circle(D', c) → k_1
  40. OrthogonalLine(D', i) → i_1
  41. Intersect(k_1, i_1) → O, P
  42. OrthogonalLine(O, i_1) → j_1
  43. OrthogonalLine(G, f_1) → l_1
  44. Intersect(l_1, j_1) → Q
  45. Polygon(O, D', G, Q) → poly1, o, d', g_2, q_1
  46. Polygon(D', E, F, G) → poly2, d'_1, e_2, f_2, g_3
  47. Polygon(C, D, E, D') → poly3, c_2, d_2, e_3, d'_2
  48. Polygon(G, F, N, L) → poly4, g_4, f_3, n_1, l_2
  49. Polygon(E, I, K, F) → poly5, e_4, i_2, k_2, f_4
  50. Circle(D, 36 / c^(2)) → p_1
  51. Intersect(p_1, f, 2) → R
  52. OrthogonalLine(R, f) → m_1
  53. Intersect(g, m_1) → S
  54. Polygon(C, S, R, D) → poly6, c_3, s_1, r_1, d_3