Since the rays of the sun are seemingly parallel as seen from Earth, the corresponding sides of the triangles are proportional.
This means that:
[tex]\frac{x}{16m}=\frac{45m}{24m}[/tex]Multiply both sides by 16 m to find the height x:
[tex]x=\frac{45m}{24m}\cdot16m[/tex]Simplify the expression on the right hand side of the equation:
[tex]x=30\text{ m}[/tex]Therefore, the water tower is 30 m tall.