In each panel, the metal sheets use 3 metal sheets * 10 metal rods = <<3*10=30>>30 metal rods.
In each panel, the metal beams use 2 metal beams * 4 metal rods = <<2*4=8>>8 metal rods.
So each panel uses 30 + 8 = <<30+8=38>>38 metal rods.
The entire fence therefore needs 38 metal rods * 10 fence panels = <<38*10=380>>380 metal rods.
#### 380