Math, asked by usksss847, 1 year ago

help me please quickly
plz

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Answered by drinking

1

Answer:

by applying pythegores thm

(here"^" means square)

Step-by-step explanation:

In ABD

AB^+BD^=AD^

15^+BD^=17^

15×15+BD^=17×17

225+BD^=289

BD^=289-225

BD^=64

BD=8

Now,in ABC

AB^+BC^=AC^

15^+(BD+CD)^=AC^

225+(8+12)^=AC^

225+400=AC^

625=AC^

AC =25

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