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<?php function s($rad){ return M_PI*(pow($rad/2,2)); } $r1=4; $r2=10; $r3=22; echo s($r1)."<br>"; $a=$r2; echo s(a)."<br>"; echo s(22); ?>
Output for git.master, git.master_jit, rfc.property-hooks
12.566370614359<br> Fatal error: Uncaught Error: Undefined constant "a" in /in/t9TiV:10 Stack trace: #0 {main} thrown in /in/t9TiV on line 10
Process exited with code 255.

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