The circumference of the bottom surface of a cone is 25.12 decimeters, and the height is 6 decimeters. The volume of the cone is___ Cubic decimeter

The circumference of the bottom surface of a cone is 25.12 decimeters, and the height is 6 decimeters. The volume of the cone is___ Cubic decimeter

The bottom radius is: 25.12 △ 3.14 △ 2 = 4 (decimeter) the bottom area is: 3.14 × 42, = 3.14 × 16 = 50.24 (square decimeter) 50.24 × 6 × 13 = 301.44 × 13 = 100.48 (cubic decimeter) a: its volume is 100.48 cubic decimeter, so the answer is: 100.48