Question

Give me any answer
If you are topper you gets my answer

Answer 1

Answer:

use Pythagoras theorem to solve it

ab²=ad²+bd²

169=25 +x²

x²= 144=x=12

ad=12 cm

ac²= ad²+dc ²

225=144+x²

hence x² is 81

and x is 9cm

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Answer 2

5^2+AD^2=13^2

AD^2=169-25

AD^2=144

AD=✓144

AD=12

AD^2+x^2=15^2

15^2-12^2=DC

225-144

✓81

81=9