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In the figure, when the outer circles al...

In the figure, when the outer circles all have radii 'r', then the radius of the inner circle will be

A

`sqrt(2)r`

B

`(sqrt(2)-1)r`

C

`(1)/(sqrt(2)r)`

D

`(2)/((sqrt(2)-1)r)`

Text Solution

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The correct Answer is:
B
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Knowledge Check

  • Tick the correct answer in the following and justify your choice : If the perimeter and the area of a circle are numerically equal, then the radius of the circle is

    A
    2 units
    B
    `pi` units
    C
    4 units
    D
    7 units

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