1) (240/2*3,14*3) * (ln(2*3/12)+1/2 ln ((4*9,5+3)/(4*9,5-3)) 2) (320/2*3,14*3) * (ln(2*3/18)+1/2 ln ((4*2,3+3)/(4*2,3-3))

viktoriya229    1   21.12.2020 21:06    0