Which of the following can be used together to measure the length of a zig-zag path?
A string
A metre scale
A wooden ruler
The best method to measure the length of a curved line is with the help of a string. In this case, the path is like a curved line.
A string can be used to trace the path and the edges can be marked. The string can then be stretched out completely to form a straight line and measured with the help of metre scale.