Area of square Circumscribed by Circle | Function to find area of square ; Radius of a circle ; Call Function to find an area of square
< ? php function find_Area ( $ r ) { return ( 2 * $ r * $ r ) ; } $ r = 3 ; echo ( " Area ▁ of ▁ square ▁ = ▁ " ) ; echo ( find_Area ( $ r ) ) ; ? >