In Madurodam, one of the models of a windmill is 1.2 meters tall and 0.8 meters wide. The width of the actual windmill is 20 meters. What is its height?

A34 meters

B30 meters

C20.4 meters

D24 meters

The ratio of the width of the model windmill to the width of the real windmill provides the scale on which the city of Madurodam is built. The scale of the city is 1: ___. (Enter only the number.)