Notice that the triangles formed by the shadows are similar, therefore:
[tex]\frac{x}{6}=\frac{15}{18},[/tex]
where x is Adriadne's height. ( We will omit the units to simplify the calculations).
Solving the above equation for x, we get:
[tex]x=\frac{15}{18}*6.[/tex]
Simplifying the above result, we get:
[tex]x=5ft.[/tex]
Answer:
[tex]5ft.[/tex]
