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Question

Area of the roti for your cousin is one-fourth the roti for you. What can you say about the ratio of radius of your cousin's rotiradius of your roti?


A

1

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B

14

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C

12

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D

18

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Solution

The correct option is C

12


Area = πr2

area of your cousin's rotiarea of your roti=14

If r1 is the radius of your cousin's roti and r2 is the radius of your roti

πr12πr22=14

Hence r1r2=12


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