A large elm tree died after it was struck by lightning the property owner thinks he can remove it himself but is concerned that it will fall on his greenhouse he takes several measurements before attempting to cut it down at 3:00 p.m. he measures the shadow of the tree and finds it to be 15 ft long he also determines that the tree is 27 ft from the greenhouse what else must he know to be able to determine the height of the tree
To determine the height of the tree, the property owner needs to know the length of the shadow cast by an object of known height at the same time. Without this information, it is not possible to calculate the height accurately. The owner should find an object with a known height, such as a measuring tape or a pole, and measure its shadow length at 3:00 p.m. Then, by using the ratio of the shadow lengths, the owner can calculate the height of the tree.
