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Question
Two circles of radii 5 cm and 3 cm touch each other externally. Find the distance between their centres.
Solution
When two circles touch each other externally, the distance between their centres is equal to the sum of their radii.
Given the radii are 5 cm and 3 cm, the distance between their centres is:
= 5 cm + 3 cm
= 8 cm
The distance between their centres is 8 cm.
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