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The smaller circle touches the bigger circle and also its perpendicular diameters. If the radius of the smaller circle is 2 cm, find the radius of the bigger circle.

 

 Nov 18, 2019
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OM = 2cm and O'M = 2cm so OO' = 2sqrt(2) cm.  O'P = 2cm, so radius of large circle = OO' + O'P = 2(1+sqrt(2))cm.

 Nov 18, 2019

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