Radius of a cone is 'r', height is 'h' a...

Radius of a cone is 'r', height is 'h' and its slant height is '`l`' then which of the following is false ?

always `l gt h`

always `l gt r`

always `r gt l`

`l^(2)=r^(2)+h^(2)`

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The correct Answer is:

A,B,D

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