A line cuts two concentric circles. The length of the chords formed by that line on the two circles are 4 cm and 16 cm. What is the difference (in cm2) in squares of radii of two circles?

A line cuts two concentric circles. The length of the chords formed by

1.	A line cuts two concentric circles. The length of the chords formed by that line on the two circles are 4 cm and 16 cm. What is the difference (in cm2) in squares of radii of two circles?
A.	240
B.	120
C.	60
D.	90
Answer» D. 90

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A line cuts two concentric circles. The length of the chords formed by that line on the two circles are 4 cm and 16 cm. What is the difference (in cm2) in squares of radii of two circles?

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