static double circle_inscribed ( int a ) {
  return PI * ( a * a ) / 12 ;
}

static double circle_inscribed ( int a ) { return PI * ( a * a ) / 12 ; }
(method_declaration (modifiers) type: (floating_point_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (integral_type) name: (identifier))) body: (block (return_statement (binary_expression left: (binary_expression left: (identifier) right: (parenthesized_expression (binary_expression left: (identifier) right: (identifier)))) right: (decimal_integer_literal)))))