Kak tolong in saya dong , cepet ya :(​

Jawaban:

11 m

Penjelasan dengan langkah-langkah:

AD^2 = DC^2 + AC^2

20^2 = 12^2 + AC^2

400 = 144 + AC^2

400 – 144 = AC^2

256 = AC^2

akar 256 = AC

16 m = AC

BD^2 = DC^2 + BC^2

13^2 = 12^2 + BC^2

169 = 144 + BC^2

169 – 144 = BC^2

25 = BC^2

akar 25 = BC

5 m = BC

AB = AC – BC

AB = 16 – 5

AB = 11 m

Semoga Membantu

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