Question

Bantuin ya kak
tolong sertakan cara, Thanks!

Answer 1

AB² = OB² - OA²
      = 20² - 12²
      = 400 - 144
AB² = 256
AB = 16

OA x AB = 1/2 x OB x AC
12 x  16 = 1/2 x 20 x AC
12 x 16 = 10 x AC
19,2 cm = AC