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2014-08-22T21:18:09+03:00

L1/L2 =3/2                  P1/P2  = 4L1/4L2 = L1/L2 =3/2     A1/A2=( L1)² /(L2)²= =L1/L2×L1/L2 =3/2×3/2 =9/4
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