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A rope is cut into three pieces. The lengths are given as \( 2 a b(a-b), 3 a^{2}(a+2 b) \), and \( b^{2}(2 a-b) \).
The expression representing the total length of the rope is If \( a=2 \) inches and \( b=3 \) inches, the total length of the rope is
93
\( \square \) inches.
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