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If a,b,c are the sides of a triangle the...

If a,b,c are the sides of a triangle then which of the following hold good?

A

`a^(2)+b^(2)+c^(2)gtab+bc+ca`

B

`(a^(2)+b^(2)+c^(2))/(ab+bc+ca)` lies between 1 and 2

C

`a^(3)+b^(3)+c^(3)gt3abc`

D

`3(ab+bc+ca)le(a+b+c)^(2)le4(bc+ca+ab)`

Text Solution

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