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VladimirAG [237]
2 years ago
8

Pls help me this is hard!!

Mathematics
1 answer:
Paul [167]2 years ago
5 0

Answer:

27.5

Step-by-step explanation:

<DAC is an inscribed angle that subtends a half circle, so m<DAC = 90°.

Triangle DAC is a right triangle.

CD = 30

AD = 12

(AC)² + (AD)² = (CD)²

(AC)² + 144 = 900

AC = √756

AC = 27.5

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