Question

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Answer 1

Step-by-step explanation:

Firstly,

Calculate the length of AC by dividing the length of AB by 2

Secondly,

In triangle AOC

find the length of hypotenuse AO

Thirdly,

Multiply the length of AO by 2 to find the length of AD

Answer 2

applying Pythagoras theorem

15²+8²=AO²

225+64=AO²

√289=AO

AO=17

AD=2×17=34