Question

A tree casts a shadow x = 100 ft long when a vertical rod 6.0 ft high casts a shadow 4.0 ft long. (See the illustration.) How tall is the tree? (Round your answer using the rules for working with measurements.)

Answer 1

I'm not really sure If I would be much help but I'll try best k? (cries a little) So you do 100
          + 6.0 
          + 4.0
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          11 .0 

So your answer is 11.0 for the tall tree.