As shown in the figure on the right, a 4-meter-long cylindrical steel is cut into two sections on average. The surface area is increased by 12.56 square centimeters, and the volume of each section of steel is several cubic centimeters Pay attention to the unit

As shown in the figure on the right, a 4-meter-long cylindrical steel is cut into two sections on average. The surface area is increased by 12.56 square centimeters, and the volume of each section of steel is several cubic centimeters Pay attention to the unit

Bottom area = 12.56 △ 2 = 6.28 square centimeter
4m = 400cm
Volume = 6.28 × (400 △ 2) = 1256 cm3