Program to find the Area and Volume of Icosahedron | Function to find area of Icosahedron ; Formula to calculating area ; Function to find volume of Icosahedron ; Formula to calculating volume ; Driver Code ; Function call to find area of Icosahedron . ; Function call to find volume of Icosahedron .
< ? php function findArea ( $ a ) { $ area ; $ area = 5 * sqrt ( 3 ) * $ a * $ a ; return $ area ; } function findVolume ( $ a ) { $ volume ; $ volume = ( ( float ) 5 / 12 ) * ( 3 + sqrt ( 5 ) ) * $ a * $ a * $ a ; return $ volume ; } $ a = 5 ; echo " Area : " ▁ , ▁ findArea ( $ a ) , ▁ " " ; STRNEWLINE echo ▁ " Volume : " ? >