Let a,b,c be the sides of triangle whose...

Let a,b,c be the sides of triangle whose perimeter is p and area is A, then

`p^3le27(b+c-a)(c+a-b)(a+b-c)`

`p^2le3(a^2+b^2+c^2)`

`a^2+b^2+c^2ge4sqrt3A`

`p^4le25ltA`

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B, C

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