On a sunny morning, a 180 cm tall person casts a 4.5 m long shadow and a tree a 30 m long shadow. How tall is the tree?

180 × 30 ÷ 4.5 = 1200cm

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.