Quantitative Aptitude GATE 2020 Question #1357 with Solution

GATE 2020

General AptitudeQuantitative AptitudemediumMCQ2 marks

The figure below shows an annular ring with outer and inner radii as b and a, respectively. The annular space has been painted in the form of blue colour circles touching the outer and inner periphery of annular space. If maximum n number of circles can be painted, then the unpainted area available in annular space is:

Aπ[(b^2 - a^2) - (n/4)(b - a)^2]Bπ[(b^2 - a^2) - n(b - a)^2]Cπ[(b^2 - a^2) + (n/4)(b - a)^2]Dπ[(b^2 - a^2) + n(b - a)^2]

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