SOLUTION: Two circles have the same centre. The larger circle has a diameter of 3.2cm and the distance between the circles is 0.9cm. What is the diameter of the smaller circle? Thank you

Question 971422: Two circles have the same centre. The larger circle has a diameter of 3.2cm and the distance between the circles is 0.9cm. What is the diameter of the smaller circle?
Thank you so much!
Answer by josgarithmetic(39630) (Show Source): You can put this solution on YOUR website!
RADIUS of the larger circle is 1.6 cm. The distance from smaller circle to larger circle is , using r as the radius of the smaller circle.

the diameter is then for the smaller circle.
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