How to get the real length knowing length in picture

The video tutorial explains how to determine the real height of a building using a photo and a given scale. It covers the concept of drawing scale, the process of setting up a ratio, and performing cross multiplication to find the actual height. The tutorial also emphasizes the importance of converting units from centimeters to meters for practical use. Finally, viewers are encouraged to apply the method to their own photos.

What is the scale of the building in the photo?

Can you explain the process of cross multiplication in this context?

What is the formula used to find the real height of the building?

How do you convert the height of the building from centimeters to meters?

What is the real height of the building if it measures 5 centimeters in the photo?