... 10,0 13, 0 2,5 19,0 16,0 13, 0 15,5 12,0 17,5 15,0 12,0 16,0 3 23, 5 20,6 16,5 19,0 14,0 22,5 18,5 15,0 22,0 4 33 ,0 27,0 22,5 26,5 21,0 32 ,0 26,0 22,0 32 5 42,0 34 ,0 30 ,0 34 ,2 30 ,0 42,0 34 ,2 ... 29,0 40,0 6 52,0 43, 0 38 ,0 44,0 37 .0 52,0 44,0 37 ,0 50,0 7 62,0 52,0 46,0 55,0 45,0 63, 0 53, 0 45,0 60 8 72,0 62,0 64,0 64,0 53, 0 75,0 63, 0 53, 0 71,0 9 82,0 73, 0 53, 0 73, 0 62,0 86,0 74,0 62,0 ... +h5f1 (3. 53) 2 Để so sánh xem (3. 53) 1 và (3. 53) 2 giá trị nào lớn hơn ta tiến hành: Vẽ trên giấy kẻ ly (Hình 3. 9) lần lượt các diện tích bộ phận f1h4, f2h 3 , của công thức (3. 53) 1...