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IF A,A(1), A(2), A(3) be the area of the...

IF `A,A_(1), A_(2), A_(3)` be the area of the in-corcle and ex-ciecles, the show that `(1)/(sqrtA_(1))+(1)/(sqrtA_(2))+(1)/(sqrtA_(3))= (1)/(sqrtA).`

A

`sqrt(A_(1))+sqrt(A_(2))+sqrt(A_(3))=sqrtpi(r_(1)+r _(2)+r_(3))`

B

`(1)/(sqrt(A_(1)))+(1)/(sqrt(A_(2)))+(1)/(sqrt(A_(3)))=(1)/(sqrtA)`

C

`(1)/(sqrt(A_(1)))+(1)/(sqrt(A_(2)))+(1)/(sqrt(A_(3)))=(s^(2))/(sqrtpir_(1)r_(2)r_(3))`

D

`sqrt(A_(1))+sqrt(A_(2))+sqrt(A_(3))=sqrtpi(4R+r)`

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The correct Answer is:
A, B, C, D
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