Answer:
15%
Step-by-step explanation:
GIven data
Initial population= 354,000
Final population=407,100
%Error= Final- Initial/initia*100
%Error= 407,100- 354,000/ 354,000*100
%Error= 53100/ 354,000*100
%Error=0.15*100
%Error=15%
Hence the error is 15%
Well you need to square 2.94 by 2 and then multiply by 3.14 to get your answer
I think you have the right one.