21. Five marks exercise problems XIII

1. Two pipes whose lengths are \(7 \ m\) \(25 \ cm\) and \(8 \ m\) \(13 \ cm\) joined by welding and then a small piece \(60 \ cm\) is cut from the whole. What is the remaining length of the pipe?

 

Remaining length \(=\) \(m\) \(cm\)

 

2. The saplings are planted at a distance of \(2 \ m\) \(50 \ cm\) in the road of length \(5 \ km\) by saravanan. If he has \(2560\) saplings, how many saplings will be planted by him? how many saplings are left?