Answer :
Since H varies directly as L, then we have
[tex]H\propto L[/tex]This implies that
[tex]\begin{gathered} \frac{H_1}{L_1}=\frac{H_2}{L_2}=k, \\ \text{ where k is a constant} \end{gathered}[/tex]Therefore,
[tex]H_2=\frac{H_1L_2}{L_1}[/tex]In this case,
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