Question

помогите пожалуйста!!!!!!

Answer 1

3=1,73; 7=2,64; 11=3,31; 15=3,87;
4=2; 8=2,82; 12=3,46; 16=4;
5=2,23; 9=3; 13=3,6; 17=4,12;
6=2,44; 10=3,16 ;14=3,74; 18=4,24;

19=4,35;
20=4,47.