After the side of a cylinder with a circumference of 6.28 decimeters on the bottom is expanded, a rectangle with a width of 2 decimeters is obtained. What is the side area and volume of the cylinder

After the side of a cylinder with a circumference of 6.28 decimeters on the bottom is expanded, a rectangle with a width of 2 decimeters is obtained. What is the side area and volume of the cylinder


Side area = 6.28 × 2 = 12.56 (square decimeter)
Bottom radius = 6.28 △ 3.14 △ 2 = 1 (decimeter)
Bottom area = 3.14 × 1 & # 178; = 3.14 (square decimeter)
Volume = 3.14 × 2 = 6.28 (cubic decimeter)