Question

explain in detail plzzz.......AND THNX FOR ANSWERING MY QUESTION FRIENDS....IT HELPS ME ALOT❤...M THANKFULL TO U​

Answer 1

Answer:

12

Step-by-step explanation:

Pythagoras theorem :-

in ∆ABD

H²= b²+h². where H is hypotenuse, b is base and h is height.

(15)²= b²+(9)²

225= b²+81

b²= 225-81

b²= 144

b=√144=12

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