Two towers. $\mathrm{A}$ and $\mathrm{B}$, standing vertically on a horizontal ground, appear in a vertical aerial photograph as shown in the figure.

The length of the image of the tower $A$ on the photograph is $1.5 \mathrm{~cm}$ and of the tower $\mathrm{B}$ is $2.0 \mathrm{~cm}$. The distance of the top of the tower $\mathrm{A}$ (as shown by the arrowhead) is $4.0 \mathrm{~cm}$ and the distance of the top of the tower $\mathrm{B}$ is $6.0 \mathrm{~cm}$. as measured from the principal point $p$ of the photograph. If the height of the tower $\mathrm{B}$ is $80 \mathrm{~m}$, the height (in meters) of the tower $\mathrm{A}$ is

Two towers. $\mathrm{A}$ and $\mathrm{B}$, standing vertically on a horizontal ground, appear in a vertical aerial photograph as shown in the figure.

The length of the image of the tower $A$ on the photograph is $1.5 \mathrm{~cm}$ and of the tower $\mathrm{B}$ is $2.0 \mathrm{~cm}$. The distance of the top of the tower $\mathrm{A}$ (as shown by the arrowhead) is $4.0 \mathrm{~cm}$ and the distance of the top of the tower $\mathrm{B}$ is $6.0 \mathrm{~cm}$. as measured from the principal point $p$ of the photograph. If the height of the tower $\mathrm{B}$ is $80 \mathrm{~m}$, the height (in meters) of the tower $\mathrm{A}$ is

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