Question

To measure the length of a curved line, you will use:

• A. only thread
• B. only geometric scale
• C. iron bar
• D. both a and b

Answer 1

The correct option is D both a and b

Thread and geometry scale both are used to measure a curved line. We use the flexibility of the thread to align it along the curved line that has to be measured. Then we can stretch the thread and with the help of a scale measure the length.