A6. The wall of the old town is $1.9 \mathrm{~m}$ high and has a $2.5 \mathrm{~m}$ long shadow. How high is the castle tower, which has a $41.5 \mathrm{~m}$ long shadow at the same time?
(A) $54.60 \mathrm{~m}$
(B) $40.70 \mathrm{~m}$
(C) $31.54 \mathrm{~m}$
(D) $20.10 \mathrm{~m}$
(E) $10.80 \mathrm{~m}$
A6 Let's denote the height of the pole as $x$. From the proportion

$$
\frac{1.9 \text{~m}}{2.5 \text{~m}}=\frac{x}{41.5 \text{~m}}
$$

it follows that $x=31.54 \text{~m}$.