I need more information to give you the correct answer on this. can you insert a picture or something?
If the square field measures 900 square meters, it must be equal on all sides. That means the length of one side alone would be equal to 900/4 which is 225.
I believe its 27.75. I wouldn't take my word for it though.
Answer:
60
Step-by-step explanation:
rate of change of graph,df(x)/dx
=(120-0)/(3-1)=60