Question

While measuring the length of the knitting needle, the reading of the scale at one end is $3.0cm$ and at the other end is $33.1cm$. What is the actual length of the needle?

Answer 1

1. For measuring the length of any object we must have scale point values of two extreme ends of an object.
2. Now for finding the exact length, we simply subtract the lesser numeric value from the bigger numeric value.
3. So actual length of needle = bigger value - lesser value = $33.1cm-3.0cm=30.1cm$

Final answer: Hence, The actual length of the needle is $30.1cm$.