If radii of two circles are 4 cm and 2.8 cm. Draw figure of these circles touching each other – (i) externally (ii) internally.

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Solution

The radii of the two circles are 4 cm and 2.8 cm.

If two circles touch each other externally, then the distance between their centres is equal to the sum of the radii.

Distance between the centres = 4 cm + 2.8 cm = 6.8 cm

If two circles touch each other internally, then the distance between their centres is equal to the difference of the radii.

Distance between the centres = 4 cm − 2.8 cm = 1.2 cm

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