Question

find the length of AD
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Answer 1

Answer:

13

Step-by-step explanation:

This figure is a trapezium.

Side DC in total is 15 (cm I suppose). If AB is 10 then that side of the triangle will be 5 (cm).

So, according to Pythagoras Theorem, (AD is hypotenuse)

5² + 12² = AD²

25 + 144 = AD²

  169       = AD²

  13 (cm)  = AD

Therefore, the length of AD is 13 (you didnt mention the unit).

Hope this helps...