Demographers are trying to understand the association between where a person lives and how they commute to work. The survey 100 people in three cities with the results shown below.

not only in mathematics, scientific proof also are required in the other field of science. also maths proofs are of particular structure, containing steps and logics. so proving is like doing science, it is science. that's why it is important to prove. 

an inaccurate proof leads to errors, or stating results that are not accurate.  which wil mess the probelm up you dont want this

i think it would be 42cm

54.864 meters

step-by-step explanation: