The formula to calculate length depends on the shape or object being measured. Here are some common examples:
1. Straight line:
- Measure the distance between two endpoints using a ruler or tape measure.
2. Circle:
- Use the formula L = 2πr, where L is the circumference and r is the radius of the circle.
3. Triangle:
- Measure the length of each side and add them together to get the perimeter of the triangle.
4. Rectangle:
- Measure the length and width of the rectangle and multiply them to get the area.
5. Cylinder:
- Use the formula L = 2πr + 2h, where L is the lateral surface area, r is the radius of the base, and h is the height of the cylinder.
6. Sphere:
- Use the formula L = 4πr^2, where L is the surface area of the sphere and r is the radius of the sphere.
Note that for irregular shapes, you may need to break them down into simpler shapes and calculate their lengths separately.
How to calculate length
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