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If the height of the transmitting tower is increased by $30 \%$, then the area covered by it increases by
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The correct answer is:
$30 \%$
Area covered by a transmission tower of height $h$ is
$\begin{aligned}
& A=2 \pi R h \\
\Rightarrow \quad & A \propto h
\end{aligned}$
So, if height is increased by $30 \%$, area of coverage also increase by $30 \%$.
$\begin{aligned}
& A=2 \pi R h \\
\Rightarrow \quad & A \propto h
\end{aligned}$
So, if height is increased by $30 \%$, area of coverage also increase by $30 \%$.
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