View Compilation Error

0_0_24496497_13379.cpp: In function 'int main()':
0_0_24496497_13379.cpp:59:9: error: expected ';' before 'double'
         double v=fabs(volume(A,B,C,D));
         ^
0_0_24496497_13379.cpp:60:12: error: 'v' was not declared in this scope
         if(v<1e-8){
            ^
0_0_24496497_13379.cpp:71:22: error: 'v' was not declared in this scope
         double r=3.0*v/(sa+sb+sc+sd);
                      ^