The tree, bamboo pole and the ground will form a right triangle. the length of the pole is the hypotenuse of the right triangle form. so it can be solve using: sin A = o / h where A is the angle o is the oposite side of the angle h is the hypotenuse
h = o / sin a h = 12.2 / sin 40 h = 18.7 m is length of the pole
Set up a proportion 3 coins:8 notes and then the other one 24 coins : x (unknown notes) they have a relationship so we can set them equal to each other. 3/8=24/x cross multiply: 8 * 24 = 192 Now divide that by 3: 192/3 = 64 So there are 64 notes in the bag
