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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

  • One circle has a radius of r, and another circle has a radius of 2r. The area of the larger circle is how many times the area of the smaller circle?

    A
    `1.5`
    B
    `2`
    C
    `3`
    D
    `4`

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