SSC JE Civil Engineering 2014 Set 2 Solved Paper

Question : 31 of 200

Marks: +1, -0

If radius b is double that of radius a, the area of the smaller circle to that of the larger circle is in proportion :

Solution:

Here b = 2a
Now the ratio of area of the smaller circle to that of the large circle

{πa^2}/{πb^2}={πa^2}/{π(2a)^2}

=a^2/{πa^2}=1/4=1:4

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