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An ellipse is described by using an endl...

An ellipse is described by using an endless string which is passed over two pins. If the axes are 6 cm and 4 cm, the necessary length of the string and the distance between the pins respectively in cm are

A

`6, 2 sqrt5`

B

`6, sqrt5`

C

`4, 2 sqrt5`

D

None of these

Text Solution

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The correct Answer is:
D
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