R(a)=pl/s R(m)=pl/s
R=R
pl/s=pl/s
0,028*1/0,5=0,017*1/s
s=0,5*0,017/0,028=33 мм^2
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R(a)=pl/s R(m)=pl/s
R=R
pl/s=pl/s
0,028*1/0,5=0,017*1/s
s=0,5*0,017/0,028=33 мм^2