the height of a flagpole
10 feet, 5 inches
3-4 m
To find the height of a flagpole, you can use a method called shadow height measurement. Here's how you can do it:
1. Choose a sunny day and a time when the sun is directly overhead (around noon is a good time).
2. Find a flat and level spot some distance away from the base of the flagpole. Measure this distance from your position to the base of the flagpole and note it down.
3. Stand at your selected spot and hold a measuring tape or ruler in a vertical position, making sure it is perfectly vertical and not tilted.
4. Measure the length of the shadow cast by the flagpole. Note down this measurement.
5. Now, measure your own height, from the ground to your eye level. Stand at your original position and measure from the ground to your eye level. Note down this measurement as well.
To calculate the height of the flagpole, you can use the following formula:
Flagpole Height = (Shadow Length * Your Height) / Distance to Flagpole
Substitute the measurements you took earlier into the formula, ensuring that all the units are consistent (e.g., meters or feet). The resulting value will give you the approximate height of the flagpole.
It's worth noting that this method assumes the ground is level and there are no obstructions between you and the flagpole. Also, keep in mind that there may be some errors in measurement due to factors like parallax or inaccuracies in measuring instruments.