Question 138
If two circles of radii, 7 cm and 10 cm respectively touch each other internally, then the distance between their centres, in centimeters, is
Solution
If circles are touching internally the distance between their centers will be = radius of bigger circle - radius of smaller circle
= 10 - 3
= 3 cm Answer
note -
If circles are touching externally the distance between their centers will be = = radius of bigger circle + radius of smaller circle
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