i believe 68 is the answer.
If I understood the question correctly, the answer would be 400
Answer:
42
Step-by-step explanation:
The answer to life the universe and everything is 42
Answer:

Step-by-step explanation:
we know that

----> 
see the attached figure to better understand the problem
Triangles ABD and BCD are similar by AA Similarity Theorem
Remember that
If two figures are similar, then the ratio of its corresponding sides is proportional
so

substitute the given values



simplify
