Area of the biggest possible rhombus that can be inscribed in a rectangle | Function to find the area of the biggest rhombus ; the length and breadth cannot be negative ; area of the rhombus ; Driver code
< ? php function rhombusarea ( $ l , $ b ) { if ( $ l < 0 $ b < 0 ) return -1 ; return ( $ l * $ b ) / 2 ; } $ l = 16 ; $ b = 6 ; echo rhombusarea ( $ l , $ b ) . " STRNEWLINE " ;