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The ratio of the radii of two circles...

The ratio of the radii of two circles is 1 : 3. Then the ratio of their areas is (a) 1 : 3 (b) 1 : 6 (c) 1 : 9 (d) None of these

A

1:3

B

1:6

C

1:9

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
C
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