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Thermal Expansion

If ABC, ∠ A...

Question

If $△ A B C, ∠ A = 90^{\circ}, A D ⊥ B C$ and $A D = B D = 2 c m$ . The length of $C D$ is

A

3 c m

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B

3.5 c m

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C

3.2 c m

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D

2 c m

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Solution

The correct option is D $2 c m$
(As, $A D, B D$ and $C D$ will be the radius of the circumcircle of $△ A B C$ )
If $A D = B D = 2 c m$
Then, $A D = C D = 2 c m$ .

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