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Question

The angle A of the triangle ABC is a right angle. The circle with AC  as diameter cuts BC at point D. If BD = 6 cm & DC = 18 cm , calculate the length  of AB.



Your Answer
A

63 cm

Your Answer
B

9 cm

Correct Answer
C

12 cm

Your Answer
D

8 cm


Solution

The correct option is B

12 cm


BD×BC = AB2

AB2 = 6 × 24

AB = 12 cm

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