Question

the radii of two circles touching internally are 11 and 4 cm respectively find the distance between their center​

Answer 1

Answer:

A and B are the centres of outer and inner circles.

BC =4cm and AO=6cm

AC=OC-OA

=(8-6)cm=2 cm

Longest chord is DE or DC

DCsquare =AD square -AC square

=6*-2*=32

DC=4root2

DE= 8root 2

Answer 2

Answer:

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