If `A` is the area and `2s` is the sum of the sides of a triangle, then (a)`Alt=(s^2)/4` (b) `Alt=(s^2)/(3sqrt(3))` (c)`2RsinA (d) `none of these`

Explanation

`25=a+b+c`

`A^2=s(s-a)(s-b)(s-c)`

`AM>=GM`

`(s+(s-a)+(s-b)+(s-c))/4=(s(s-a)(s-b)(s-c))^(1/4)`

`(4s-2s)/4=(A^2)^(1/4)`

`s/2>=(A)^(1/2)`

`AM>=GM`

`((s-a)+(s-b)+(s-c))/3>=((s-a)(s-b)(s-c))^(1/3)`

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