The circumference of the bottom surface of a cylinder is 12.56 meters and the height is 6 meters. Its side area is______ Square meters, the surface area is______ Square meters, the volume is______ Cubic meter

The circumference of the bottom surface of a cylinder is 12.56 meters and the height is 6 meters. Its side area is______ Square meters, the surface area is______ Square meters, the volume is______ Cubic meter

The bottom radius of the cylinder is: 12.56 △ 3.14 △ 2 = 2 (m); the side area is: 12.56 × 6 = 75.36 (M2); the bottom area is: 3.14 × 22 = 12.56 (M2); the surface area is: 12.56 × 2 + 75.36, = 25.12 + 75.36, = 100.48 (M2); the volume is: 12.56 × 6 = 75.36 (M3); a: the side area is 75.36 m2, the surface area is 100.48 m2, and the volume is 75.3 So the answer is: 75.36; 100.48; 75.36

Two identical cuboids just form a cube, and the surface area of the cube is 30 square centimeters. If the two cuboids form a cuboid, the surface area of the large cuboid is 30 square centimeters______ Square centimeter

The larger surface area of the small cuboid is: 30 △ 6 = 5 (square centimeter), the smaller surface area is: 5 △ 2 = 2.5 (square centimeter), so the surface area of the combined cuboid is: 5 × 2 × 2 + 2.5 × 4 × 2-2.5 × 2, = 20 + 20-5, = 35 (square centimeter). A: the surface area of the combined cuboid is 35 square centimeter

Divide a cube with a surface area of 30 square centimeters into two cuboids, and then put the two cuboids together into a large cuboid to find the surface of the large cuboid

Think like this:
1. After dividing into two cuboids, the surface area will increase by 2 squares. That is to say, there are 8 squares. This is the key to solve the problem
2. Area of a square: 30 △ 6 = 5 (CM & # 178;)
3. The way to make a large cuboid is to glue the smallest side (half of 5), that is, to glue a square with an area of 5cm. The surface area of such a large cuboid is actually the area of 7 squares. Please draw a picture
4. The surface area of large cuboid: 5 × 7 = 35 (CM & # 178;)