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Definition of Functions

If Q is the...

Question

If $Q$ is the midpoint of $C D$ and $d (C, Q)$ $=$ $4.5$ , find the length of $C D$ .

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Solution

The correct option is D $9$
If Q is the midpoint of CD then $C D = 2 C Q$ . Therefore $C D = 2 d = 2 (4.5) = 9$ . Hence $C D = 9$ .

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