= sqrt (p * (p -) * (p - b) * (p - c));\rcout < ]”¨©°$ßà(:" < < s < < endl;\r}\r2 9 . /012ëìH& c + + Òdouble fac (int), í£H&\rèî$ïð.\r# iostream, h > in <\rint fac (int x).\rif (x > 1) {\rx = x * fac (x - 1);\rreturn x;\r}\rreturn 1;\r)\rvoid main ()\r(\rint n);\rcout < ]”^_H&èî1" < < endl;\rcin > > n;\rresult = fac (n);\rcout] < n < ]”$ïðp(1" < < ) < < endl;\r)\r3 0 . /01ñ#£;ò^_$%&óx ô y $(ÄÅJÆ\rÇ h e È ) ·à(ÄÅJÆÇj i È)..\r# iostream, h > in <\rvoid main ()\r(\rdouble a, b,\rcout < ]”^_ 2 &1" < < endl;\rcin > > and > > b;\rhe = a + b;\rit = a * b;\rcout < ],(:" < < "< à ( 1”< < < endl her;\r)
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