SSC CGL Tier II 12 Apr 2015 Paper

Question : 14 of 100

Marks: +1, -0

If radius of a circle is increased by 5%, then the increase in its area is

Solution:

(1) Required per cent increase

= (2 x+ {x^{2}}/{100} ) \%

= (2 × 5+ {5 × 5}/{100} ) \%=10.25 \%

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