Cylinder Surface Area Demo
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This example demonstrates how to deconstruct a cylinder into its constituent faces, illustrating the connection between the cylinder's surface area, circumference, area of circles, and solid geometry. It uses GeoGebra commands like Point, Circle, Intersect, Ellipse, Vector, Translate, Polygon, Arc, Segment, Angle, Line, Midpoint, If, Conic, OrthogonalLine, Center, Rotate, Mirror. Suitable for high school mathematics education to help students visually understand the calculation principles of cylinder surface area.
GeoGebra Commands & Parameters
Point(xAxis) → ACircle(A, r) → cIntersect(c, xAxis) → B, CEllipse(E, D, C) → eIntersect(xAxis, yAxis) → FVector(F, G) → uTranslate(B, Vector[(u * h)]) → B'_1Translate(C, Vector[(u * h)]) → C'_1Translate(A, Vector[(u * h)]) → A'Translate(e, Vector[(u * h)]) → e'_1Polygon(B'_1, B, C, C'_1) → poly1, b', b, c_1, c'Arc(e'_1, C'_1, B'_1) → fArc(e, B, C) → gArc(e, C, B) → kArc(e'_1, C'_1, B'_1) → p_5Arc(e'_1, B'_1, C'_1) → qArc(e, B, C) → sSegment(A', A) → h_6Segment(A', C'_1) → pAngle(A, A', C'_1) → αLine(A, A') → jIntersect(e'_1, j) → H, IIntersect(k, j) → J,Circle(I, r) → tIntersect(t, j, 2) → KCircle(K, I) → d_1Circle(J, r) → e_1Intersect(e_1, j, 1) → LCircle(L, J) → f_1Intersect(f_1, j, 2) → MIntersect(d_1, j, 2) → NIntersect(s, j) → O,Vector(H, N) → vVector(O, M) → wTranslate(H, Vector[(v * n)]) → H'_1Translate(D, Vector[(u * h)]) → D'Translate(E, Vector[(u * h)]) → E'Line(B, B'_1) → lLine(C, C'_1) → mIntersect(d_1, l, 1) → PIntersect(d_1, m, 1) → QVector(B'_1, P) → zVector(C'_1, Q) → u_1Translate(B'_1, Vector[(z * n)]) → B''Translate(C'_1, Vector[(u_1 * n)]) → C''Midpoint(B'_1, A') → RMidpoint(B, A) → SLine(R, S) → a_1Intersect(q, a_1) → T,Intersect(d_1, a_1, 1) → UVector(T, U) → v_1Translate(T, Vector[(v_1 * n)]) → T'Intersect(f_1, l, 1) → VIntersect(f_1, m, 1) → WIntersect(f_1, a_1, 2) → ZIntersect(s, a_1) → A_1,Vector(B, V) → w_1Vector(A_1, Z) → z_1Vector(C, W) → b_1Translate(B, Vector[(w_1 * (n - 1))]) → B'Translate(A_1, Vector[(z_1 * (n - 1))]) → C_1Translate(O, Vector[(w * (n - 1))]) → O'Translate(C, Vector[(b_1 * (n - 1))]) → C'If(n ≟ 0.02, B'_1, If[n < 1, B'', P]) → B_1If(n ≟ 0.02, T, If[n < 1, T', U]) → D_1If(n ≟ 0.02, H, If[n < 1, H'_1, N]) → E_1If(n ≟ 0.02, C'_1, If[n < 1, C'', Q]) → F_1Conic(B_1, D_1, E_1, F_1, I) → g_1Conic(I, B_1, D_1, E_1, F_1) → h_1If(n < 1, B, If[n < 2, B', V]) → G_1If(n < 1, A_1, If[n < 2, C_1, Z]) → H_1If(n < 1, O, If[n < 2, O', M]) → I_1If(n < 1, C, If[n < 2, C', W]) → J_1Conic(G_1, H_1, I_1, J_1, J) → k_1Vector(H, O) → i_1Translate(H, Vector[(i_1 * (n - 2))]) → H'If(n < 2, H, If[n < 3, H', O]) → K_1Segment(H, K_1) → j_1Arc(e, B, C) → q_1Intersect(g, k_1) → M_1, N_1, R_1, S_1Arc(k_1, M_1, N_1) → r_1Arc(k_1, N_1, M_1) → p_1Arc(e, C, B) → s_1OrthogonalLine(I, j) → l_1OrthogonalLine(J, l) → m_1Circle(I, w_2) → t_1Intersect(t_1, l_1, 1) → L_1Intersect(t_1, l_1, 2) → O_1OrthogonalLine(O_1, l_1) → n_1OrthogonalLine(L_1, m_1) → a_2Intersect(m_1, n_1) → P_1Intersect(m_1, a_2) → Q_1Circle(H, r) → c_2Intersect(c_2, j, 2) → T_1Circle(T_1, H) → d_2OrthogonalLine(H, j) → b_2Intersect(d_2, l_1, 1) → U_1OrthogonalLine(T_1, j) → e_2Intersect(d_2, e_2, 1) → V_1Angle(U_1, T_1, V_1) → βCircle(L_1, r) → f_2Intersect(f_2, l_1, 2) → W_1Vector(I, W_1) → u_2Translate(d_2, Vector[(u_2 * (n - 3))]) → g_2Center(g_2) → Z_1Intersect(g_2, b_2) → A_2, B_3Rotate(A_2, w_3, Z_1) → B_2If(n < 3, H, If[n < 4, B_2, L_1]) → C_2Mirror(C_2, j) → D_2Mirror(E_2, j) → F_2Midpoint(I, L_1) → G_2Intersect(m, l_1) → H_2Midpoint(H_2, C'_1) → I_2Vector(H_2, G_2) → v_2OrthogonalLine(C'_1, m) → i_2Polygon(D_2, F_2, E_2, C_2) → poly2, d_3, f_3, e_3, c_3Vector(C'_1, W_1) → z_2Translate(C'_1, Vector[(z_2 * (n - 3))]) → J_2If(n < 3, C'_1, If[n < 4, J_2, W_1]) → K_2Mirror(K_2, j) → L_2Conic(D_2, L_2, I, K_2, C_2) → h_2Arc(h_2, B_2, D_2) → k_2Arc(h_2, B_2, D_2) → p_2Conic(F_2, N_2, J, M_2, E_2) → q_2Intersect(q_2, k_1) → O_2, P_2, Q_2, R_2Center(h_2) → S_2Center(q_2) → T_2OrthogonalLine(T_2, j) → j_2OrthogonalLine(S_2, j) → m_2Intersect(h_2, m_2) → U_2, V_2Intersect(q_2, j_2) → W_2, Z_2Polygon(U_2, D_2, F_2, W_2) → poly3, u_3, d_4, f_4, w_5Polygon(V_2, C_2, E_2, Z_2) → poly4, v_3, c_4, e_4, z_3Intersect(q_2, d_3, 2) → A_3Intersect(q_2, e_3, 2) → C_3Polygon(F_2, A_3, C_3, E_2) → poly5, f_5, a_3, c_5, e_5Arc(q_2, C_3, A_3) → s_2Arc(q_2, E_2, F_2) → t_2Arc(q_2, E_2, F_2) → g_3Segment(A_3, C_3) → l_2Intersect(k_1, l_2) → D_3, E_3Segment(E_3, A_3) → n_2Segment(D_3, C_3) → b_3Segment(F_2, E_2) → h_3Arc(k_1, D_3, E_3) → k_3Segment(E_3, D_3) → i_3Segment(D_2, C_2) → j_3Segment(L_2, K_2) → l_3Arc(q_2, W_2, F_2) → p_3Arc(q_2, E_2, Z_2) → q_3Arc(q_2, E_2, Z_2) → r_3Arc(q_2, W_2, F_2) → s_3Intersect(k_1, d_3) → F_3, J_3Intersect(k_1, e_3) → G_3, K_3Arc(k_1, G_3, F_3) → t_3Arc(k_1, F_3, R_2) → g_4Arc(k_1, O_2, G_3) → h_4Segment(F_2, E_2) → r_2Intersect(k_1, r_2) → H_3, I_3Segment(F_2, I_3) → m_3Segment(E_2, H_3) → n_3Arc(q_2, E_2, F_2) → k_4Arc(k_1, H_3, I_3) → p_4Segment(I_3, H_3) → a_4Segment(F_2, E_2) → b_4Segment(E_2, Z_2) → i_4Segment(D_2, F_2) → j_4Segment(C_2, E_2) → l_4Arc(k_1, N_1, M_1) → q_4Arc(k_1, N_1, M_1) → r_4Midpoint(j_4) → L_3Translate(e, Vector[(u * h)]) → e'Arc(k_1, M_1, N_1) → s_4Arc(k_1, R_2, N_1) → t_4Arc(k_1, R_2, O_2) → d_5Arc(k_1, P_2, Q_2) → g_5Center(h_1) → M_3Segment(M_3, F_1) → aMidpoint(c_1) → N_3Point(xAxis) → O_3Circle(O_3, r) → h_5Intersect(h_5, xAxis) → P_3, Q_3Ellipse(R_3, S_3, Q_3) → k_5OrthogonalLine(S_3, i_2) → iOrthogonalLine(Q_3, i_2) → m_4OrthogonalLine(P_3, i_2) → n_4OrthogonalLine(R_3, i_2) → a_5Intersect(i_2, a_5) → T_3Intersect(n_4, i_2) → U_3Intersect(i, i_2) → V_3Intersect(m_4, i_2) → W_3Ellipse(T_3, V_3, W_3) → q_5Polygon(U_3, W_3, Q_3, P_3) → poly6, u_4, w_6, q_6, p_6Ellipse(T_3, V_3, W_3) → r_5Arc(k_5, Q_3, P_3) → s_5Arc(k_5, P_3, Q_3) → t_5Center(q_5) → Z_3Segment(O_3, Z_3) → b_5Segment(Z_3, W_3) → i_5Angle(W_3, Z_3, O_3) → γIntersect(k_1, f_4) → A_4,Intersect(k_1, e_4) → B_4,Intersect(g_3, k_1) → C_4, D_4, E_4, F_4Polygon(Z_2, C_4, B_4) → poly7, b_6, z_4, c_6Polygon(F_4, A_4, W_2) → poly8, w_7, f_6, a_6Arc(q_2, W_2, F_4) → d_6Arc(q_2, C_4, Z_2) → e_6Arc(q_2, W_2, F_4) → g_6Arc(q_2, C_4, Z_2) → k_6Arc(k_1, G_3, J_3) → r_6Intersect(k_1, b) → G_4, H_4Segment(N_2, H_4) → j_5Segment(M_2, G_4) → l_5Segment(E_3, D_3) → m_5Segment(H_3, I_3) → n_5Point(c_3) → J_4Point(k_2) → K_4Vector(L_4, K_4) → v_4Point(c_3) → N_4Vector(M_4, N_4) → u_5
AI Drawing Prompt Reference
Draw an unfolded view of a cylinder, including two circular bases and the side surface. First, draw a circle, then draw its diameter, and draw the height of the cylinder. Translate the circle along the height to get another circle. Use these two circles and the cylinder's height to construct two rectangles. Then, draw two elliptical arcs for the side surface of the cylinder. Finally, use these elements to construct the unfolded view of the cylinder.
The prompt above was compiled from the original drawing commands and is for reference only.