The height of the ramp of Raúl is calculated as; 8ft
How to use the principle of similar triangles?
Both big and small triangles are similar triangles because all three of their corresponding angles are congruent.
Now, to get the height we will use the concept of similar triangles to get;
h/2 = 12/3
Cross multiply to get;
h = 24/3
h = 8 ft
Thus, the height of the ramp of Raúl is 8ft.
Read more about similar triangles at; https://brainly.com/question/14285697
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