Geometryhard · Past Paper
Two circles touch each other externally. The distance between their centers is 14 cm and the sum of their areas is 130*pi sq cm. Find the radii.
A7 cm, 7 cm
B10 cm, 4 cm
C11 cm, 3 cm
D9 cm, 5 cm
✓ Correct Answer: C — 11 cm, 3 cm
r1 + r2 = 14 and r1^2 + r2^2 = 130. Testing 11 and 3: 11+3=14, 121+9=130. Correct.
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