You'll have to add most of the units because I didn't
3. 12.5×24.25×x=3758.75 , 303.125×x=3758.75 divide 303.125 from each side and get x=12.4
4. 4.5×x=18 divide 4.5 from each side and get x=4
5. 20×30×x=3600 , 600×x=3600 divide 600 from both sides and get x=6
6. 3×3.5×1.5=V just multiply everything and get V=15.75 then multiply 15.7 by 7.5 and get 118.125
7. 40×25×2=V multiply everything and get V=2000 then multiply 2000 by .0005 to get 1oz (not sure about the last part but I'm 99% sure it's right)
8. 5×5×6=V multiply everything and get V=150 then multiply 150 by 15 to get 2250 (same with this last part)
9. 8×4×x=32 , 32×x=32 divide each side by 32 and get x=1 and then 1% (Not sure about this one at all. But I tried.)