Question 1006480
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{{{S[1]}}} = {{{2*pi*R[1]}}},


{{{S[2]}}} = {{{2*pi*R[2]}}},


{{{S[2]}}} - {{{S[1]}}} = {{{2}}} ----->


{{{R[2]}}} - {{{R[1]}}} = {{{1/(2*pi)}}}.{{{(S[2] - S[1])}}} = {{{2/(2*pi)}}} = {{{1/pi}}} cm.