Explain with an example how you will use the metre ruler, if the ends of the ruler are broken.

Hint:A metre rule is an instrument or a kind of ruler that is used to determine the length and width of various objects. A metre ruler, as the name implies, is one metre long, which is the same as one hundred centimetres.

Complete answer:
We can measure the length of an object by taking the difference between the two readings.That is, take the broken ruler and use the scale's available readings to determine the length. Take note of the two readings you get from the two ends of the material you've taken. Subtract the greater reading from the lesser reading to get the object's true length.

Let's consider an example here. Let the ends of the ruler be taken as point X and point Y.Position the ruler next to the object to be measured. Measure the distance from point X to point Y. If the reading on the ruler at the end X is 1.0 cm, and the reading at the end Y is 4.3 cm, the rod XY's length is 4.3-1.0=3.3 cm.

Note:We can use the ruler to determine the length of an object if the ends of the ruler become bent or destroyed with use, or the zero mark is not apparent. The object is positioned next to a particular marking on the ruler, and the locations of both ends of the object are read on the ruler.