If Rhydian is at a distance of 15 ft from the lamppost at that moment, what is Rhydian's height (in feet)? Use similar triangles.

Question

Rhydian while walking away from a 15 ft lamppost casts a shadow 5 ft long.

If Rhydian is at a distance of 15 ft from the lamppost at that moment, what is Rhydian's height (in feet)? Use similar triangles.

Answer 1

lamp/boy = (shadow+distance)/shadow

15/x=(5+15)/5

You solve for x.

Answer 2