The circumference of the bottom surface of a cylinder is 25.12 cm, and its height is 9. How many cubic centimeters is its volume? It is a cone with the same height as the bottom of the cylinder

The circumference of the bottom surface of a cylinder is 25.12 cm, and its height is 9. How many cubic centimeters is its volume? It is a cone with the same height as the bottom of the cylinder


Radius 25.12 △ 3.14 △ 2 = 4cm
The volume is 4 × 4 × 3.14 × 9 = 452.16 cm;
Volume of cone with equal base and height
452.16 × 1 / 3 = 150.72 cm and 179;



The circumference of the bottom surface of a cylinder is 25.12 cm and the height is 24 cm. How many cubic centimeters of volume is it cut into the largest cone?


25.12 △ 3.14 △ 2 = 4 (CM), 3.14 × 42 × 24 × (1-13), = 3.14 × 16 × 24 × 23, = 803.84 (cm3), a: the volume of the cut part is 803.84 cm3



A cylinder steel block with a bottom area of 9 square centimeters and a height of 6 centimeters is cast into a cone. If the bottom areas of the cone and the cylinder are equal, then the height of the cone is () cm; if the height of the cone and the cylinder are equal, then the bottom area of the cone is () square centimeters


V cylinder = s bottom × H = 9 × 6 = 54 (cm3)
V cone = s bottom × h △ 3
Because V-cone = v-cylinder
(1) H = 3 × V cone △ s bottom = 3 × 54 △ 9 = 18
(2) S bottom = 3 × V cone △ H = 3 × 54 △ 6 = 27
The answer to this question is
18 27