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6 years ago

510 Points
```										let center of smaller circle is  P ....coordinates of P will be (r,r) ..........
r is the radius of smaller circle...

let point of contact of both circles if q then , pq = r     (from the diagram)
if o is origin then

op = (r2+r2) = r(root2)                               (by distance formula)
oq = op + pq = r(root2) + r = r(root2+1)
oq is also radius of bigger circle so
R = r(root2+1)
r = 1  (given) so
R = (root2+1)
```
6 years ago
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