Is it true that we can measure the length of a curved line by using a ruler?

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True

False

answer is B.

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Detailed Solution

The above statement is False.
A ruler is an instrument that is only used to measure the length of straight lines. To measure the length of curve lines, we need to use a thread. With the help of a thread, we need to deform it into a required curved form, then measure that portion of the thread with the help of a ruler. A thread is used to measure a curved line. A tie is formed at one end of the thread, which serves as the starting point and is placed at the start of the line. Try to measure a small section of relatively straight line. Place your thumb at the opposite end of the measured section and measure the next straight section, then repeat to trace the rest of the curved path. Stretch the thread and measure it against a metre scale after that.
The correct statement would be that we can measure the length of a curved line by using a thread.

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