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Question

If the ratio of the areas of two circles is 100 : 1, then the ratio of their radii is

A
4 :1
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B
1 : 8
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C
10 : 1
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D
1 : 10
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Solution

The correct option is C 10 : 1
The ratio of the areas of the two circles is square of the ratio of their radii
1001=10212
Hence ,the ratio of their radii is 10:1

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