Answer:
Now first we have to found the decrease length.
which is:4mm-3mm=1mm
Now
we have to use formula to calculate the percentage which is
= decrease length/total length ×100%
=. 1/4×100%
=. 25 %
Therefore,the decrease rate is 25%.
there isnt any increase or decrease
We need a graph or table or whatever came with this question
Step-by-step explanation: