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Question
Two circles of radii 5 cm and 3 cm touch each other externally. Find the distance between their centres.
Sum
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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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