Geometryeasy · Past Paper
If the radii of two circles are 3 cm and 4 cm, and they touch externally, what is the distance between their centers?
A1 cm
B5 cm
C7 cm
D12 cm
✓ Correct Answer: C — 7 cm
For external contact, distance = r1 + r2 = 3 + 4 = 7 cm.
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