1. The surface area is 4×4×2+4×8×4= 160 (square centimeter).

Volume 4×4×8= 128 (cubic centimeter)

2. The bottom area is 3. 14×(5÷2)? = 19.625 (square centimeter)

The side area is 3. 14×5×2=3 1.4 (square centimeter).

The surface area is 31.4+19.625× 2 = 70.65 (square centimeter).

Volume 19.625×2=39.25 (cubic centimeter)

3. The surface area is 3×3×6=54 (square centimeter).

Volume 3×3×3=27 (cubic centimeter)

4. The bottom area is 3. 14×3? =28.26 square centimeters

Volume 28.26×6× 1/3=56.52 (cubic centimeter)

I made it myself. There may be a problem. You'd better check it yourself.