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A ladder 10 m long leans against a house...

A ladder 10 m long leans against a house. When its foot is 6 m from the house and moving away at the rate of `0.5 m//sec`. , its top is sliding down at the rate of

A

`(3)/(8)m//sec`.

B

`(8)/(3)m/sec`.

C

`(4)/(3)m/sec`.

D

`(3)/(4)m/sec`.

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The correct Answer is:
A
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