Length = 4× 5 = 20cm

Width = 4× 4 =16cm

Height = 4× 3 =12cm

Surface area = 2× (20×16+20×12+16×12) =1504cm2.

Volume =20× 16× 12=3840 cubic centimeters.

You can ask questions if you don't understand. If it helps, please adopt it. Thank you!