Answer:
316.1 ft
Step-by-step explanation:
Let's sketch the diagram as seen below;
From the above diagram, we can go ahead and determine the length of the opposite side(x) to angle 56 degrees in the upper triangle as seen below;

We can also go ahead and determine the length of the opposite side(y) to angle 32 degrees in the lower triangle as seen below;

Therefore, the height(h) of the building will be;

So the neighboring building is 316.1 ft tall.