{
   TCanvas *c = new TCanvas("c", "c",0,0,600,600);
   new TGeoManager("cone", "poza4");
   TGeoMaterial *mat = new TGeoMaterial("Al", 26.98,13,2.7);
   TGeoMedium *med = new TGeoMedium("MED",1,mat);
   TGeoVolume *top = gGeoManager->MakeBox("TOP",med,100,100,100);
   gGeoManager->SetTopVolume(top);
   TGeoVolume *vol = gGeoManager->MakeCone("CONE",med, 40,10,20,35,45);
   vol->SetLineWidth(2);
   top->AddNode(vol,1);
   gGeoManager->CloseGeometry();
   gGeoManager->SetNsegments(30);
   top->Draw();
   TView *view = gPad->GetView();
   if (view) view->ShowAxis();
}