The difference between the areas of any 2 consecutive circles will be pi.

(S2+S4+S6+....+S200)-(S1+S3+S5+.....+S199)=(S2-S1)+(S4-S3)+(S6-S5)+...(S200-S199)=100*pi but the answer is given as 0. Is there any wrong in my solution?

@AkhileshSingh

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